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Chemical Structure| 112-45-8
Chemical Structure| 112-45-8
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Product Details of [ 112-45-8 ]

CAS No. :112-45-8 MDL No. :MFCD00007032
Formula : C11H20O Boiling Point : -
Linear Structure Formula :- InChI Key :OFHHDSQXFXLTKC-UHFFFAOYSA-N
M.W : 168.28 Pubchem ID :8187
Synonyms :
Undecylenic Aldehyde

Safety of [ 112-45-8 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P264-P272-P273-P280-P302+P352 UN#:N/A
Hazard Statements:H315-H412 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 112-45-8 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 112-45-8 ]

[ 112-45-8 ] Synthesis Path-Downstream   1~62

  • 1
  • [ 112-43-6 ]
  • [ 112-45-8 ]
YieldReaction ConditionsOperation in experiment
100% Stage #1: 10-Undecen-1-ol With oxalyl dichloride; dimethyl sulfoxide In dichloromethane at -78℃; for 1h; Inert atmosphere; Stage #2: With triethylamine In dichloromethane at -78 - 23℃; for 1h; Inert atmosphere;
94% With molecular sieve; tetrapropylammonium perruthenate (VII); N-Methylmorpholine N-oxide In dichloromethane at 20℃; for 1h;
93% With pyridine; oxygen In toluene at 80℃; for 8h;
91% With pyridine; 4 A molecular sieve; oxygen for 17h;
90% With pyridinium chlorochromate In dichloromethane for 2h; Molecular sieve; Undec-10-enal (3) In a 1 L flame-dried three-necked flask equipped with magnetic stirrer, were added dry dichloromethane (270 mL), pyridinium chlorochromate (85.44 g, 396.4 mmol), and finely crushed 3 Å molecular sieves (85 g). 10-undecen-1-ol (9spOH, available from commercialsource) was slowly added to the mixture (45 g, 264.2 mmol). After 2 hours, diethyl ether (270 mL)was added and the resulting heterogeneous mixture was poured in a 4 L beaker equipped with amagnetic stirrer containing diethyl ether (3 L). The remaining tar was triturated 3 times with diethyl ether (100 mL) and the resulting organic solutions were poured in the beaker. After the precipitated chromium byproduct and molecular sieves settled, the supernatant was purified by passing through a large silica plug. The solvents were removed in vacuo and the resulting dark oil was distilled over calcium hydride, affording a sweet-smelling clear liquid (40.1 g, 90%). The 1HNMR was consistent with the published spectrum.1
90% With sodium hypochlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; potassium carbonate; isocyanuric acid In ethyl acetate at 0 - 10℃; for 4h; General Procedure for theoxidation of alcohols employing nitroxyl radical / imide / NaOCl in thepresence of K2CO3. General procedure: To a mixture ofthe alcohol (3.839 mmol), K2CO3 (2.0 equiv, 7.678 mmol)and cyanuric acid (0.1 equiv, 0.384 mmol) in 20 mL of ethyl acetate were addedTEMPO or AZADO (3 mol%, 0.115 mmol) and 12% NaOCl (1.2 equiv, 4.607 mmol, Wako Pure Chemical Industries, Ltd.)at 0-10°C. The mixture was then stirred to complete. Thereaction mixture was extracted with ethyl acetate. The organic layer wasconcentrated under reduced pressure, and the residue was purified by silica gelcolumn chromatography to afford the corresponding product.
90% With sodium chlorine monoxide; tetrabutylammonium bromide; Sodium hydrogenocarbonate; potassium bromide In dichloromethane; water monomer at 0℃; for 0.166667h; Schlenk technique;
89% With pyridinium chlorochromate In dichloromethane at 20℃; for 5h;
88% With pyridinium chlorochromate In dichloromethane at 23℃; for 16h; Inert atmosphere; Molecular sieve;
87% With pyridine; air In toluene at 65℃; for 18h;
85% With pyridinium chlorochromate In dichloromethane at -20℃; for 2h;
84% With anhydrous Sodium acetate; pyridinium chlorochromate In dichloromethane
79% Stage #1: 10-Undecen-1-ol With oxalyl dichloride; dimethyl sulfoxide In dichloromethane at -78℃; for 0.25h; Inert atmosphere; Stage #2: With triethylamine In dichloromethane for 0.5h; Inert atmosphere;
78% With 2,2,6,6-tetramethyl-1-piperidinyloxy free radical; dimethylsulfane; oxygen In chlorobenzene at 90℃;
76% With bis-trimethylsilanyl peroxide In dichloromethane at 25℃;
73% With pyridinium chlorochromate In dichloromethane at 0℃; for 3h;
71% With iodosylbenzene; ytterbium(III) nitrate In 1,2-dichloro-ethane at 80℃; for 4h;
70% With N-Methylmorpholine N-oxide In dichloromethane for 3h; Ambient temperature;
70% With NaBrO3; NaHCO3 buffer pH:10; anhydrous sodium carbonate In water monomer; 1,2-dichloro-ethane at 70℃; for 1.2h;
With hydrogen; copper(II) oxide
92 % Chromat. With N-chloro-succinimide; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; tetra-n-butyl-ammonium chloride; Sodium hydrogenocarbonate; potassium carbonate In dichloromethane for 24h; Ambient temperature; pH 8.6;
22 % Chromat. With pyridine; 4 A molecular sieve; oxygen In toluene at 100℃; for 1h;
100 % Chromat. With N-chloro-succinimide; 4 A molecular sieve; potassium carbonate In dichloromethane at 20℃; for 0.5h;
77 % Chromat. With N-tert-butylbenzenesulfinimidoyl chloride; 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane at 0 - 20℃; for 1h;
99 % Chromat. With N-chloro-succinimide; N-tert-butylbenzenesulfenamide; potassium carbonate In dichloromethane at 20℃; for 0.5h;
With poly[4-(diacetoxyiodo)styrene]; 2,2,6,6-tetramethyl-1-piperidinyloxy free radical In acetone at 20℃; for 4h;
Multi-step reaction with 4 steps 1: 73 percent / triethylamine / CH2Cl2 / 0.25 h / 0 °C 2: 93 percent / NaI / acetone / 2 h 3: 72 percent / AgNO2 / diethyl ether / a.) 0 deg C, 15 h, b.) room temperature, 8 h 4: 1.) NaH, tert-butyl alcohol, 2.)KMnO4, H3BO3 / 1.) pentane, 20 min, 2.) benzene, water, 2 min
Multi-step reaction with 2 steps 1: 1.) lead tetraacetate, Mn(OAc)2*4H2O / 1.) benzene, reflux
With pyridine-SO3 complex; dimethyl sulfoxide; N-ethyl-N,N-diisopropylamine In dichloromethane at 0℃; for 0.5h;
With tetrapropylammonium perruthenate (VII); N-Methylmorpholine N-oxide In dichloromethane at 20℃; for 1h; Molecular sieve; Inert atmosphere;
With Dess-Martin periodane In dichloromethane at 20℃; for 2h; Inert atmosphere;
50 mg With hydrogenchloride; C18H38N2O(1+)*F6P(1-); 1-n-butyl-3-methylimidazolium bistrifluoromethylsulfonylamide; NaNO2 In water monomer at 60℃; for 5h;
With alcohol dehydrogenase from Escherichia coli; nicotinamide adenine dinucleotide In dimethyl sulfoxide at 25℃; Enzymatic reaction;
90 %Chromat. With 3-(tert-butoxycarbonyl amino)-9-azabicyclo[3.3.1]nonane N-oxyl; oxygen; NaNO2 In acetic acid at 25℃; for 1.5h; Typical procedure for the aerobic oxidation of p-methylbenzyl alcohol to p-methyl benzaldehyde (Table 2, entry 2): General procedure: A 25-mL tube equipped with a magnetic stirrer bar was added p-methylbenzyl alcohol (0.122 g, 1 mmol), sodium nitrite (5.5 mg, 8 mol%) and 3-(tert-butoxycarbonyl amino)-9-azabicyclo[3.3.1]nonane N-oxyl (3-BocNH-ABNO) (7.7 mg, 3 mol%). After the air in the tube was replaced with O2, 1 mL of acetic acid was added with syringe. Then the mixture was stirred under dioxygen atmosphere (balloon) at room temperature until the reaction was completed. After the reaction was finished, to the reaction mixture was added 8 mL of diethyl ether. Then the mixture was transferred into a separation funnel, and washed with saturated sodium bicarbonate solution (10 mL×3). The aqueous phase was extracted with 8 mL of ether. The combined organic phases was concentrated on a rotary evaporator and the residue was purified by column chromatography on silica gel using petroleumether/diethyl ether as eluent to afford p-methyl benzaldehyde as a colorless liquid; yield: 0.108 g (90%).
With dmap; [2,2]bipyridinyl; copper (I) iodide; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical In acetonitrile at 20℃; for 2h;

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[2]Berube, Marie; Poirier, Donald [Organic Letters, 2004, vol. 6, # 18, p. 3127 - 3130]
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[7]Tian, Yangwu; Guo, Xiaqun; Li, Meichao; Li, Chunmei; Hu, Xinquan; Jin, Liqun; Sun, Nan; Hu, Baoxiang; Shen, Zhenlu [Organic Letters, 2021, vol. 23, # 10, p. 3928 - 3932]
[8]Qin, Xiangdong; Tzvetkov, Tochko; Liu, Xin; Lee, Dong-Chan; Yu, Luping; Jacobs, Dennis C. [Journal of the American Chemical Society, 2004, vol. 126, # 41, p. 13232 - 13233]
[9]Ravu, Vengala Rao; Leung, Gulice Y. C.; Lim, Chek Shik; Ng, Sin Yee; Sum, Rong Ji; Chen, David Y.-K. [European Journal of Organic Chemistry, 2011, # 3, p. 463 - 468]
[10]Kakiuchi; Maeda; Nishimura; Uemura [Journal of Organic Chemistry, 2001, vol. 66, # 20, p. 6620 - 6625]
[11]Ishmuratov; Yakovleva; Kharisov; Muslukhov; Tolstikov [Russian Chemical Bulletin, 1997, vol. 46, # 5, p. 1035 - 1037]
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[13]Tappin, Nicholas D. C.; Michalska, Weronika; Rohrbach, Simon; Renaud, Philippe [Angewandte Chemie - International Edition, 2019, vol. 58, # 40, p. 14240 - 14244][Angew. Chem., 2019, vol. 131, # 40, p. 14378 - 14382,5]
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[15]Kanemoto, Shigekazu; Oshima, Koichiro; Matsubara, Seijiro; Takai, Kazuhiko; Nozaki, Hitosi [Tetrahedron Letters, 1983, vol. 24, # 21, p. 2185 - 2188]
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[22]Coleman, Karl S.; Coppe, Maurice; Thomas, Christophe; Osborn, John A. [Tetrahedron Letters, 1999, vol. 40, # 19, p. 3723 - 3726]
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[25]Matsuo, Jun-Ichi; Iida, Daisuke; Yamanaka, Hiroyuki; Mukaiyama, Teruaki [Tetrahedron, 2003, vol. 59, # 35, p. 6739 - 6750]
[26]Tashino, Yousuke; Togo, Hideo [Synlett, 2004, # 11, p. 2010 - 2012]
[27]Kornblum, Nathan; Erickson, Allen S.; Kelly, William J.; Henggeler, Barbara [Journal of Organic Chemistry, 1982, vol. 47, # 23, p. 4534 - 4538]
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  • 2
  • [ 67-56-1 ]
  • [ 112-45-8 ]
  • [ 65405-66-5 ]
YieldReaction ConditionsOperation in experiment
97% With orthoformic acid triethyl ester for 12h; Heating / reflux; 1.1 Preparation of 11Silanyludecalal (1) First Stage: Synthesis of 11,11-dimethoxyundec-1-ene (7) 37.78 g of ethyl orthoformate (13.09 ml, 356 mmol, 2 eq.) and 1.691 g of para-toluenesulfonic acid (catalytic amount: 8.9 mmol, 0.051 eq.) are added to a solution of 30.05 g of 97% undecenal (37.10 ml, 173 mmol) dissolved in 500 ml of methanol. The reaction takes place over 12 hours and at reflux of the methanol. After addition of 500 ml of dichloromethane, the reaction mixture is washed successively with a 1% sodium carbonate solution (two times) and with a saturated sodium chloride solution, dried over anhydrous magnesium sulfate and then concentrated to give 36.39 g of a brown liquid with a yield of 97%. The NMR analysis of the product obtained, in accordance with that of the product expected, was as follows: δH (200 MHz, CDCl3): 1.31 (12H, m, H4-9), 1.59 (2H, m, H10), 2.06 (2H, m, H)3.21 (6H, S, H12+13), 4.38 (1H, t, H11, 3JH-H 5.7 Hz), 4.98 (2H, m, H1), 5.81 (1H, m, H2), δc (200 MHz, CDCl3): 24.97, 29.30, 29.48, 29.76, 29.84, 29.87, 32.87, 34.18, 52.91 (C12+13), 104.94 (C11), 114.48 (C1), 139.54 (C2), m/z (NBA): 213 [M-H]+.
96% With pyridinium p-toluenesulfonate for 17h; Ambient temperature;
92% With ammonium chloride for 18h; Reflux; Inert atmosphere;
80% With pyridinium p-toluenesulfonate at 20℃; for 20h; Inert atmosphere;

  • 3
  • [ 38460-95-6 ]
  • [ 112-45-8 ]
YieldReaction ConditionsOperation in experiment
92% With tri-n-butyl-tin hydride; triphenylphosphine In tetrahydrofuran at -30℃; for 2h;
91% With ammonium hydroxide; formic acid In diethyl ether; chloroform for 0.583333h; Ambient temperature;
86% With tri-n-butyl-tin hydride In benzene for 1h; Ambient temperature;
40% With iron(II) oxide; tris(2,4,6-trimethoxyphenyl)phosphine; phenylsilane In toluene at 60℃; for 2h; Inert atmosphere; Schlenk technique; Catalytic reaction General procedure: A typical procedure for the iron oxide catalyzed reduction of 3-phenylpropionyl chloride (1a) with H3SiPh (Table1 , entry 1): iron oxide (3.6mg, 0.050mmol) and TMPP (6.7mg, 0.013mmol) were added to a 10mL Schlenk flask with a magnetic stir bar. The flask was evacuated and backfilled with argon three times. Then, H3SiPh (34μL, 0.28mmol) was added to the flask and the reaction mixture was stirred at 60°C for 20h under an argon atmosphere. Then, toluene (0.50mL) was added to the flask and the resultant solution was stirred at room temperature for 5min before 1a (37μL, 0.25mmol) was loaded. Further, the reaction mixture was stirred at 60°C for 20h under an argon atmosphere. After cooling to room temperature, the reaction mixture was diluted with diethyl ether (5.0mL) and tetradecane (50μL, 0.19mmol) as an internal standard was added. The yield of 3-phenylpropanal (2a; 57%) was analyzed by gas chromatography. 2a was isolated by silica gel column chromatography (hexane: EtOAc=13: 1). Pale yellow oil (16.8mg) was obtained in 50% yield.
60 % Chromat. With 4(P(C6H5)3)*2Cu(1+)*2(BH3)*2(CN)(1-)={(P(C6H5)3)2CuBH3(CN)}2 In acetone for 3h; Ambient temperature;
Multi-step reaction with 3 steps 1: K2CO3 2: acetone 3: 69 percent / diisobutylaluminum hydride / tetrahydrofuran / 0.5 h / -10 - 20 °C
Multi-step reaction with 2 steps 1: Et3N / CH2Cl2 2: (i) LiAlH4, tBuOH, (ii) aq. H2SO4, Na2SO4

  • 4
  • [ 112-45-8 ]
  • [ 75-16-1 ]
  • [ 21951-49-5 ]
YieldReaction ConditionsOperation in experiment
100% In diethyl ether at -40℃;
90% In tetrahydrofuran at 0℃;
83% In tetrahydrofuran; diethyl ether at -40 - 25℃; for 15h; Inert atmosphere;
62% In tetrahydrofuran; diethyl ether at 0 - 20℃; for 2h;
59% In diethyl ether for 14h;
50% In diethyl ether at 0 - 35℃; for 3h; Inert atmosphere;
In tetrahydrofuran at 0 - 20℃; for 12h; Inert atmosphere;

  • 6
  • [ 112-45-8 ]
  • [ 26116-56-3 ]
  • [ 112452-21-8 ]
YieldReaction ConditionsOperation in experiment
27% With hydrogenchloride; sodium phosphate buffer; sodium cyanoborohydride In acetonitrile for 1.5h; Ambient temperature;
  • 7
  • [ 112-45-8 ]
  • [ 112-38-9 ]
YieldReaction ConditionsOperation in experiment
90% With tris[2-(4,6-difluorophenyl)pyridinato-C2,N]-iridium(III); oxygen In acetonitrile at 20℃; Irradiation; Sealed tube; Green chemistry; chemoselective reaction; Synthesis of carboxylic acids General procedure: An oven-dried resealable test tube equipped with a magnetic stir bar was charged withaldehyde (1.0 mmol), Ir(dFppy)3 (0.005-0.01 mmol), and MeCN (4.0 mL, 0.25 M). Oxygen wasthen bubbled through the reaction mixture and sealed with a silicone septa screw-cap. A balloonfilled with oxygen was attached to the tube, and the test tube was placed under blue LEDs atroom temperature. The reaction was allowed to proceed for 3-12 h, and reaction progress waschecked by TLC. The solvent was removed under vacuum, and the corresponding carboxylic acidwas purified by flash silica gel chromatography.
87% With tetrabutyl-ammonium chloride; dihydrogen peroxide; potassium carbonate In tetrahydrofuran Ambient temperature; without CeCl3*7H2O;
87% With tetrabutyl-ammonium chloride; dihydrogen peroxide; potassium carbonate In tetrahydrofuran Ambient temperature;
84% With dipyridinium dichromate
73% With sodium chlorite; sodium dihydrogenphosphate; 2-methyl-but-2-ene In <i>tert</i>-butyl alcohol at 0℃; for 2h; Inert atmosphere;
70% With 1-hydroxycyclohexyl phenyl ketone; sodium hydroxide In 1,2-dimethoxyethane at 80℃; Sealed tube;
With sodium hydroxide 1.) 19 h reflux; 2.) 24 h reflux; Yield given. Multistep reaction;
85 % Spectr. With dihydrogen peroxide In water at 90℃; for 2h;
With poly[4-(diacetoxyiodo)styrene]; 2,2,6,6-tetramethyl-piperidine-N-oxyl In acetone at 20℃; for 24h;
Multi-step reaction with 2 steps 1: 92 percent / trityl perchlorate / CH2Cl2 / 3 h / -45 °C 2: 76 percent / piperidine / H2O / 3 h / 90 °C
90 %Chromat. With dihydrogen peroxide In water at 90℃; for 2h; 10 Example 10 Example 10 Nafion NR50 (500 mg), 30% aqueous hydrogen peroxide solution (1.3 mL, 11 mmol), and 10-undecenaldehyde (2.1 mL, 10 mmol) were mixed and stirred at 90° C. for 2 hours. After the reaction solution was cooled to room temperature, the yield of 10-undecenoic acid by measurement of GLC was 90%.
With alcohol dehydrogenase from Escherichia coli; nicotinamide adenine dinucleotide In dimethyl sulfoxide at 25℃; Enzymatic reaction;

Reference: [1]Iqbal, Naeem; Choi, Sungkyu; You, Youngmin; Cho, Eun Jin [Tetrahedron Letters, 2013, vol. 54, # 46, p. 6222 - 6225]
[2]Trost, Barry M.; Masuyama, Yoshiro [Tetrahedron Letters, 1984, vol. 25, # 2, p. 173 - 176]
[3]Trost, Barry M.; Masuyama, Yoshiro [Tetrahedron Letters, 1984, vol. 25, # 2, p. 173 - 176]
[4]Clarembeau, M.; Cravador, A.; Dumont, W.; Hevesi, L; Krief, A.; et al. [Tetrahedron, 1985, vol. 41, # 21, p. 4793 - 4812]
[5]Ravu, Vengala Rao; Leung, Gulice Y. C.; Lim, Chek Shik; Ng, Sin Yee; Sum, Rong Ji; Chen, David Y.-K. [European Journal of Organic Chemistry, 2011, # 3, p. 463 - 468]
[6]Tan, Wen-Yun; Lu, Yi; Zhao, Jing-Feng; Chen, Wen; Zhang, Hongbin [Organic Letters, 2021, vol. 23, # 17, p. 6648 - 6653]
[7]Ganem, Bruce; Heggs, Richard P.; Biloski, Alan J.; Schwartz, Daniel R. [Tetrahedron Letters, 1980, vol. 21, p. 685 - 688]
[8]Sato, Kazuhiko; Hyodo, Mamoru; Takagi, Junko; Aoki, Masao; Noyori, Ryoji [Tetrahedron Letters, 2000, vol. 41, # 9, p. 1439 - 1442]
[9]Tashino, Yousuke; Togo, Hideo [Synlett, 2004, # 11, p. 2010 - 2012]
[10]Mukaiyama, Teruaki; Miyoshi, Norikazu; Kato, Jun-ichi; Ohshima, Masahiro [Chemistry Letters, 1986, p. 1385 - 1388]
[11]Current Patent Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY - US2006/167311, 2006, A1 Location in patent: Page/Page column 4
[12]Bojarra, Samiro; Reichert, Dennis; Grote, Marius; Baraibar, Álvaro Gómez; Dennig, Alexander; Nidetzky, Bernd; Mügge, Carolin; Kourist, Robert [ChemCatChem, 2018, vol. 10, # 5, p. 1192 - 1201]
  • 9
  • [ 112-45-8 ]
  • [ 107-18-6 ]
  • [ 114837-51-3 ]
YieldReaction ConditionsOperation in experiment
85% Stage #1: allyl alcohol With chloro-trimethyl-silane; sodium iodide In acetonitrile at 20℃; for 12h; Stage #2: With bismuth In acetonitrile at 20℃; for 1h; Stage #3: 10-Undecenal In acetonitrile for 22h;
65% In various solvent(s) at 25℃; for 39h;
65% With bis(benzonitrile)palladium(II) dichloride; tin(ll) chloride In various solvent(s) at 25℃; for 39h;
54% With tin(II) iodide; tetra-(n-butyl)ammonium iodide; sodium iodide In water at 60℃; for 46h;
53% With tin(ll) chloride In tetrahydrofuran; water at 20℃; for 47h;

  • 10
  • [ 112-45-8 ]
  • [ 108-46-3 ]
  • [ 155401-88-0 ]
YieldReaction ConditionsOperation in experiment
93% With hydrogenchloride In ethanol at 60℃; for 25h;
49% With hydrogenchloride In ethanol; water at 0℃; for 13h; Reflux; Synthesis of calixresorcinarenes General procedure: The synthesis was carried out based on the following recipe: 0.23 mol of resorcinol and 0.23 mol of aldehyde were dissolved into 240 mL absolute ethanol. The solution was cooled down to 0 C in an ice bath, and then 37 mL of concentrated hydrochloric acid was injected, and it was stirred for 1 h, then heated and refluxed for another 12 h. When the mixture was cooled down to room temperature, most of the product precipitated. Excess of water was added to completely precipitate the formed calix resorcinarene,which was filtered on a glass frit G3 type. The solid material was rinsed by distilled water and dried in vacuum over NaOH or P2O5. The recrystallization from methanol and then from an acetone/hexane 1:1 mixture gave a yield of 49%, 50% and 48.8%, respectively, for the compounds CAL 11U, CAL 9U and CAL 10.
42% With hydrogenchloride In ethanol
36% With hydrogenchloride In ethanol; water Inert atmosphere; Cooling with ice; Reflux;
20% With hydrogenchloride at 60℃; for 16h;
With hydrogenchloride In ethanol
With hydrogenchloride In ethanol

  • 11
  • [ 112-45-8 ]
  • [ 112-43-6 ]
YieldReaction ConditionsOperation in experiment
99% Stage #1: 10-Undecenal With [CpFe(IMes)(CO)2]I; phenylsilane In tetrahydrofuran at 70℃; for 1h; Inert atmosphere; Irradiation; Stage #2: With methanol; sodium hydroxide In tetrahydrofuran; water at 20℃; for 1h; Inert atmosphere;
96% Stage #1: 10-Undecenal With (dppe)2Fe(H)2*(C7H8)2; Na-tetrakis(ethoxy)borate In toluene at 100℃; for 1h; visible light irradiation; Inert atmosphere; Stage #2: With water; sodium hydroxide In methanol; toluene at 20℃; for 16h;
94% With diisopropoxytitanium(III) tetrahydroborate In dichloromethane at -20℃; for 0.133333h;
93% Stage #1: 10-Undecenal With polymethylhydrosiloxane; P(MeNCH2CH2)3N In tetrahydrofuran at 20℃; for 1h; Stage #2: In tetrahydrofuran at 20℃; for 1h;
85% With (ethylenediamine)[1,2-bis(diphenylphosphino)ethane]ruthenium(II)[bis(adamantane-1-carboxylate)]; hydrogen; benzoic acid In n-heptane at 70℃; Autoclave; Inert atmosphere; 6 Undec-10-en-1-ol synthesis Undec-10-enal (84 g, 0.5 mol.), heptane (84 g, 100 wt. %, technical grade), and (ethylenediamine)[1,2-bis(diphenylphosphino)ethane]ruthenium[bis((adamantane-1-carboxylate)] (45.9 mg, 0.05 mmol, 0.01 mol.%) were loaded altogether in a 300 ml autoclave equipped with a mechanical stirring device. Sealed autoclave was then purged under stirring with nitrogen (3 times 5 bars) and hydrogen (3 times 5 bars) before being pressurized to 10 bars hydrogen. It was then heated to 70° C. and hydrogen pressure was maintained to 10 bars during all the reaction to afford desired product with 90% selectivity. After complete reaction conversion (checked by both hydrogen consumption and GC), autoclave was cooled down to 25° C. It was then depressurized and purged with nitrogen (3 times 5 bars) and reaction mixture was then transferred to a round-bottomed flask and solvent was removed under vacuum. After initial flash distillation and further fractional distillation, undec-10-en-1-ol was obtained in 85% yield.
82% With indium isopropoxide; isopropyl alcohol at 25℃; for 3h; Inert atmosphere;
80% With trichlorosilane; N,N-dimethyl-formamide In dichloromethane at 0℃; for 6h;
77% Stage #1: 10-Undecenal With nickel(II) acetate tetrahydrate; tricyclohexylphosphine In tetrahydrofuran at 70℃; for 16h; Stage #2: With sodium hydroxide In methanol
71% Stage #1: 10-Undecenal With Cp(CO)2Mn(IMes); diphenylsilane In toluene at 25℃; for 8h; Schlenk technique; Inert atmosphere; UV-irradiation; Stage #2: With sodium hydroxide In methanol; toluene at 20℃; for 2h; Schlenk technique; Inert atmosphere;
68% With [Ni(1,3-dimesitylimidazol-2-ylidene)Clcyclopentadienyl]; sodium triethylborohydride; diphenylsilane In tetrahydrofuran at 25℃; for 1h; Inert atmosphere; Schlenk technique; chemoselective reaction;
58% With diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate; tris[3,5-bis(trifluoromethyl)phenyl]-borane In 1,4-dioxane at 100℃; for 12h; Glovebox; General procedure for the hydrogenation reaction General procedure: In a glovebox, aldehydes (0.25 mmol) and the Hantzsch ester 1 (95 mg, 0.38 mmol) were added to asolution of tris[3,5-bis(trifluoromethy)phenyl]borane (9) (8.1 mg, 12.5 μmol) in 1 mL of anhydrous1,4-dioxane. The reaction mixture was stirred at 25 or 100 C for 12 h. An internal standard (biphenylor mesitylene) was added to the reaction mixture and filtrated through a cotton plug. The resultingsolution was analyzed with gas chromatography.
Multi-step reaction with 2 steps 1: [CpFe(IMes)(CO2)]I / 3 h / 30 °C / Inert atmosphere; Neat (no solvent); visible light irradiation 2: sodium hydroxide / methanol; water / 1 h / 20 °C
With (ethylenediamine)[1,2-bis(diphenylphosphino)ethane]ruthenium(II)[bis(adamantane-1-carboxylate)]; hydrogen In n-heptane at 80℃; for 16h; Autoclave; chemoselective reaction;
95 %Chromat. With C18H32BrFeNO3P2; sodium formate In methanol; dodecane at 40℃; for 6h; Inert atmosphere; chemoselective reaction;
With hydrogen In isopropyl alcohol at 149.84℃; for 0.5h; Autoclave; chemoselective reaction;
With dichloro(3-phenyl-1H-inden-1-ylidene)bis(tricyclohexylphosphine)ruthenium(II); sodium formate; trimethyldodecylammonium chloride In water at 85℃; Schlenk technique;
With sodium tetrahydroborate In methanol at 0℃; for 1h;

Reference: [1]Jiang, Fan; Bezier, David; Sortais, Jean-Baptiste; Darcel, Christophe [Advanced Synthesis and Catalysis, 2011, vol. 353, # 2-3, p. 239 - 244]
[2]Castro, Luis C. Misal; Bezier, David; Sortais, Jean-Baptiste; Darcel, Christophe [Advanced Synthesis and Catalysis, 2011, vol. 353, # 8, p. 1279 - 1284]
[3]Ravikumar; Chandrasekaran, Srinivasan [Journal of Organic Chemistry, 1996, vol. 61, # 3, p. 826 - 830]
[4]Wang, Zhigang; Wroblewski, Andrzej E.; Verkade, John G. [Journal of Organic Chemistry, 1999, vol. 64, # 21, p. 8021 - 8023]
[5]Current Patent Assignee: Firmenich International SA - US2014/243526, 2014, A1 Location in patent: Paragraph 0207
[6]Lee, Jaeyoung; Ryu, Taekyu; Park, Sangjune; Lee, Phil Ho [Journal of Organic Chemistry, 2012, vol. 77, # 10, p. 4821 - 4825]
[7]Kobayashi, Shu; Yasuda, Masaru; Hachiya, Iwao [Chemistry Letters, 1996, # 5, p. 407 - 408]
[8]Zheng, Jianxia; Darcel, Christophe; Sortais, Jean-Baptiste [Catalysis science and technology, 2013, vol. 3, # 1, p. 81 - 84]
[9]Zheng, Jianxia; Elangovan, Saravanakumar; Valyaev, Dmitry A.; Brousses, Remy; Cesar, Vincent; Sortais, Jean-Baptiste; Darcel, Christophe; Lugan, Noel; Lavigne, Guy [Advanced Synthesis and Catalysis, 2014, vol. 356, # 5, p. 1093 - 1097]
[10]Bheeter, Linus P.; Henrion, Mickael; Brelot, Lydia; Darcel, Christophe; Chetcuti, Michael J.; Sortais, Jean-Baptiste; Ritleng, Vincent [Advanced Synthesis and Catalysis, 2012, vol. 354, # 14-15, p. 2619 - 2624]
[11]Hamasaka, Go; Tsuji, Hiroaki; Uozumi, Yasuhiro [Synlett, 2015, vol. 26, # 14, p. 2037 - 2041]
[12]Bezier, David; Jiang, Fan; Roisnel, Thierry; Sortais, Jean-Baptiste; Darcel, Christophe [European Journal of Inorganic Chemistry, 2012, # 9, p. 1333 - 1337]
[13]Dupau, Philippe; Bonomo, Lucia; Kermorvan, Laurent [Angewandte Chemie - International Edition, 2013, vol. 52, # 43, p. 11347 - 11350][Angew. Chem., 2013, p. 11557 - 11560]
[14]Mazza, Simona; Scopelliti, Rosario; Hu, Xile [Organometallics, 2015, vol. 34, # 8, p. 1538 - 1545]
[15]Putro, Wahyu S.; Kojima, Takashi; Hara, Takayoshi; Ichikuni, Nobuyuki; Shimazu, Shogo [Catalysis science and technology, 2017, vol. 7, # 16, p. 3637 - 3646]
[16]Öztürk, Bengi Özgün; Öztürk, Sinem [Molecular catalysis, 2020, vol. 480]
[17]Calamante, Massimo; Dei, Filippo; Maramai, Samuele; Migliorini, Francesca; Petricci, Elena [ChemCatChem, 2021, vol. 13, # 12, p. 2794 - 2806]
  • 12
  • [ 112-45-8 ]
  • [ 60754-70-3 ]
YieldReaction ConditionsOperation in experiment
88% With 4-methoxypyridine N-oxide; 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In dimethyl sulfoxide at 20℃; for 30h;
58% With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In fluorobenzene; dimethyl sulfoxide at 80℃; for 12h;
58% With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In fluorobenzene; dimethyl sulfoxide at 80℃; for 12h;
  • 13
  • [ 112-38-9 ]
  • [ 112-45-8 ]
  • (E)-9-undecenal [ No CAS ]
YieldReaction ConditionsOperation in experiment
80% With hydrogen; 2,2-dimethylpropanoic anhydride In N,N-dimethyl-formamide at 80℃; for 5h;
  • 14
  • [ 112-45-8 ]
  • [ 553664-70-3 ]
  • (E)-(R)-Hexadeca-3,15-dien-6-ol [ No CAS ]
YieldReaction ConditionsOperation in experiment
75% With toluene-4-sulfonic acid In dichloromethane at 20℃; for 20h;
  • 15
  • [ 75-47-8 ]
  • [ 112-45-8 ]
  • [ 126347-88-4 ]
YieldReaction ConditionsOperation in experiment
75% With chromium chloride; chloro-trimethyl-silane; zinc In 1,4-dioxane at 25℃; for 24h;
  • 16
  • [ 75-47-8 ]
  • [ 112-45-8 ]
  • (E)-1-Iodo-dodeca-1,11-diene [ No CAS ]
YieldReaction ConditionsOperation in experiment
83% With chromium dichloride In tetrahydrofuran at 0℃; for 2h;
With chromium dichloride In tetrahydrofuran at 0℃; for 2h;
  • 17
  • [ 864953-57-1 ]
  • [ 112-45-8 ]
  • [ 736140-88-8 ]
YieldReaction ConditionsOperation in experiment
94% With N-ethyl-N,N-diisopropylamine; lithium chloride In acetonitrile at 20℃; for 15h;
  • 18
  • [ 112-45-8 ]
  • [ 36219-78-0 ]
YieldReaction ConditionsOperation in experiment
97% With water; oxygen; copper(l) chloride In tetrahydrofuran at 20℃; for 36h;
80% With palladium diacetate; Dess-Martin periodane In water; acetonitrile at 50℃; Inert atmosphere;
75% With 2,2,6,6-tetramethyl-piperidine-N-oxyl; sodium perchlorate In water; acetonitrile at 20℃; Electrochemical reaction;
  • 19
  • [ 4899-94-9 ]
  • [ 112-45-8 ]
YieldReaction ConditionsOperation in experiment
63% With Schwartz's reagent In tetrahydrofuran at 20℃; for 0.75h;
Multi-step reaction with 2 steps 1: Ti(O-i-Pr)4, Ph2SiH2 / 5 h / 20 °C 2: 1 M aq. HCl / tetrahydrofuran / 20 °C
  • 20
  • [ 112-45-8 ]
  • [ 75-05-8 ]
  • 12-cyano-11-hydroxydodec-1-ene [ No CAS ]
YieldReaction ConditionsOperation in experiment
63% With 1,8-diazabicyclo[5.4.0]undec-7-ene In N,N,N,N,N,N-hexamethylphosphoric triamide at 50℃; for 24h;
63% With N,N,N,N,N,N-hexamethylphosphoric triamide; 4 A molecular sieve; 1,8-diazabicyclo[5.4.0]undec-7-ene at 50℃; for 24h;
  • 21
  • [ 112-45-8 ]
  • [ 33189-72-9 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1: 1.) Mg / 1.) THF, 2.) THF, -15 deg C, 1 h, 20 deg C, 12 h 2: 93 percent / DMAP / pyridine / 48 h 3: 85 percent / CuI / tetrahydrofuran / 2 h / -10 °C 4: 1.) BBN, 2.) H2O2, NaOAc / 1.) THF, 10 deg C, 2 h, 2.) THF, H2O, 25 deg C, 2 h 5: 92 percent / pyridine
  • 22
  • [ 112-45-8 ]
  • [ 34010-21-4 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 6 steps 1: diethyl ether / 4 h / 0 - 2 °C 2: 79 percent / pyridine / 1.) -5 deg C, 6 h; 2.) 0 deg C, 12 h 3: 53 percent / sodium iodide, zinc dust / tetrahydrofuran / 1.) 65-70 deg C, 3 h; 2.) 20 deg C, 3 h 4: 1.) 2percent O3 in O2; 2.) sodium tetrahydroborate / 1.) cyclohexane, methanol; 2.) room temp., 15 h 5: 1.) isobutylmagnesium bromide; 2.) C5H5TiCl2 / 1.) diethyl ether, 0 deg C, 15 min; 2.) room temp., 1-1,5 h 6: 90 percent / pyridine
Multi-step reaction with 3 steps 1: (i) Na3)2>, THF, (ii) /BRN= 1746480/ 2: 9-BBN / tetrahydrofuran 3: Py / 3 h / Heating
  • 23
  • [ 626-55-1 ]
  • [ 112-45-8 ]
  • 2-(3-pyridinyl)-10-undecanal [ No CAS ]
YieldReaction ConditionsOperation in experiment
73% With caesium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl In 1,4-dioxane at 80℃; for 6h;
  • 24
  • [ 112-45-8 ]
  • [ 515-84-4 ]
  • [ 1059581-55-3 ]
YieldReaction ConditionsOperation in experiment
87% With Rieke-manganese In tetrahydrofuran for 5h; Inert atmosphere; Reflux; optical yield given as %de; stereoselective reaction;
87% With manganese In tetrahydrofuran for 5h; Reflux; Inert atmosphere; stereoselective reaction;
  • 25
  • [ 112-45-8 ]
  • [ 124931-12-0 ]
  • [ 1222465-49-7 ]
YieldReaction ConditionsOperation in experiment
90% Stage #1: diethyl (N-methoxy-N-methylcarbamoylmethyl)phosphonate With sodium hydride In tetrahydrofuran; mineral oil at 0 - 20℃; Stage #2: 10-Undecenal In tetrahydrofuran; mineral oil at 0 - 20℃; for 0.75h;
  • 26
  • [ 112-45-8 ]
  • [ 60556-38-9 ]
  • [ 1373211-70-1 ]
YieldReaction ConditionsOperation in experiment
74% Stage #1: 10-Undecenal; tert-butyltrifluorosilane With tetrabutyl ammonium fluoride In tetrahydrofuran at 0 - 20℃; for 3h; Stage #2: With hydrogenchloride In tetrahydrofuran; water 3.2. Preparation of the fluorinated alcohols 2 Typical procedure: a mixture of 10-undecenal (1.68 g, 10 mmol) and CF3SiMe3 (1.71 g, 1.9 mL, 12 mmol) in 15 mL of THF, which was cooled to 0 °C, was treated with 1 M THF solution of TBAF (15 mol%, 15 mL, 1.5 mmol). The reaction mixture was brought to room temperature and stirred for 3 h. The resulting silyloxy compound was then hydrolyzed with aqueous HCl. Then, the mixture was extracted with ether (15 mL × 3), dried over anhydrous Na2SO4, and concentrated in vacuo. The residue was purified by silica gel column chromatography (eluent: hexane/EtOAc = 7/1) to give 1,1,1-trifluoro-11-dodecen-2-ol (2r) (1.77 g, 7.43 mmol, 74%).2r: 1H NMR (CDCl3) δ 1.30-1.38 (m, 12H), 1.53-1.71 (m, 2H), 2.04 (q, J = 7.10 Hz, 2H), 2.32 (br s, 1H), 3.84-3.94 (m, 1H), 4.93 (dm, J = 9.99 Hz, 1H), 4.99 (ddt, J = 16.78, 1.40, 1.40 Hz, 1H), 5.81 (ddt, J = 16.78, 9.99, 6.39 Hz, 1H); 13C NMR (CDCl3) δ 25.23, 29.22, 29.40, 29.52, 29.67, 29.68, 29.90, 70.86 (q, J = 30.86 Hz), 114.48, 125.56 (q, J = 281.02 Hz), 126.96, 139.53; 19F NMR (CDCl3, CFCl3) δ -80.55 (d, J = 7.10 Hz, 3F); IR (neat) 3376, 3078, 2928, 2857, 1641, 1466, 1392, 1279, 1172, 994, 910, 847, 723, 695 cm-1; HRMS (EI) Calcd for (M+) C12H21F3O 238.1544, Found 238.1544.
  • 27
  • [ 112-45-8 ]
  • [ 112-38-9 ]
  • [ 51642-06-9 ]
  • [ 24835-08-3 ]
  • [ 1377903-66-6 ]
  • 28
  • [ 112-45-8 ]
  • [ 112-38-9 ]
  • [ 24835-08-3 ]
  • 2-nitrobenzyl isocyanide [ No CAS ]
  • [ 1377903-67-7 ]
  • 29
  • [ 112-45-8 ]
  • [ 105-34-0 ]
  • methyl 2-amino-5-(non-8-en-1-yl)thiophene-3-carboxylate [ No CAS ]
YieldReaction ConditionsOperation in experiment
85% With sulfur; triethylamine In methanol for 15h; Reflux; Methyl 2-amino-5-(non-8-enyl)thiophene-3-carboxylate (TJ110). Methyl 2-amino-5-(non-8-enyl)thiophene-3-carboxylate (TJ110). To a mixture of undec-10-enal (0.326 g, 1 .95 mmol), methyl cyanoacetate (0.192 g, 1.95 mmol) and sulfur (0.062g, 1.95 mmol) in methanol (10 mL), NEt3(0.196 g, 1.95 mmol) was added. After stirring the resulting mixture at reflux for 15 hrs, the reaction mixture was added to water (20 mL). Ethyl acetate (20 mL) was added and the organic solution was washed with distilled water (3 x20 mL), dried over MgS04, filtered, and then evaporated to dryness to afford the crude product mixture. Purification by column chromatography (silica, eluent heptane - ethyl acetate 50-50) afforded TJ110 (0.465 g, 85%) as an off-white solid. 1H NMR (300 MHz, CDCI3) δΗ 1.30 (m, 8H); 1.58 (m, 2H); 2.04 (q, 2H); 2.56 (t, 2H); 3.78 (s, 3H); 5.49 (m, 2H); 5.79 (m, 3H); 6.60(s, 1 H).
85% With sulfur; triethylamine In methanol for 15h; Reflux; 6 Methyl 2-amino-5-(non-8-enyl)thiophene-3-carboxylate To a mixture of undec-10-enal (0.326 g, 1.95 mmol), methyl cyanoacetate (0.192 g, 1.95 mmol) and sulfur (0.062 g, 1.95 mmol) in methanol (10 mL), NEt3(0.196 g, 1.95 mmol) was added. After stirring the resulting mixture at reflux for 15 hrs, the reaction mixture was added to water (20 mL). Ethyl acetate (20 mL) was added and the organic solution was washed with distilled water (3×20 mL), dried over MgSO4, filtered, and then evaporated to dryness to afford the crude product mixture. Purification by column chromatography (silica, eluent heptane-ethyl acetate 50-50) afforded TJ110 (0.465 g, 85%) as an off-white solid. 1H NMR (300 MHz, CDCl3) δH 1.30 (m, 8H); 1.58 (m, 2H); 2.04 (q, 2H); 2.56 (t, 2H); 3.78 (s, 3H); 5.49 (m, 2H); 5.79 (m, 3H); 6.60 (s, 1H).
85% With sulfur; triethylamine for 12h; Reflux; Inert atmosphere; 5.1.2.1. General procedure for the synthesis of 2-amino-5-alkylthiophene-3-carboxylate derivatives 3 as shown in Table 1 General procedure: A solution of aliphatic carbonyl compound 1 (2 mmol), activatednitrile (2 mol), elemental sulfur (2 mmol) and triethylamine(2 mmol) in MeOH (15 ml) was heated at reflux temperature for12 h under argon atmosphere. The MeOH was evaporated underreduced pressure and the residue was extracted with dichloromethane(3 50ml). The combined organic phases were washedwith a saturated solution of NaHCO3, dried over magnesium sulfateand the solvent was evaporated under reduced pressure. Purificationby column chromatography (silica, eluent CH2Cl2) afforded 3 asan off-white solid or a semi-solid.
  • 30
  • [ 112-45-8 ]
  • [ 150-13-0 ]
  • [ 73780-75-3 ]
YieldReaction ConditionsOperation in experiment
66% With sodium cyanoborohydride In ethanol at 25℃; for 18h; Inert atmosphere; 4-Undec-10-enylamino-benzoic acid (3). To a solution of 10-undecenal (13) (1.2 mmol) and 4-aminobenzoic acid (4) (1.4 mmol) in 3 mL of ethanol under argon was added NaCNBH3 (3.0 mmol) intwo portions, and the solution was stirred at 25 °C for 18 h. The reaction solution was diluted with diethyl ether, washed with water twice and brine, dried (MgSO4), filtered and concentrated to yield a crude solid that was purified by column chromatography on silica gel using a mixture of hexane and ethyl acetate (9:1) to give 0.24 g (66% yield) of compound 3 as a white solid: mp, 115 - 118 °C; IR ν 13417, 3097, 3065, 2920, 2850, 1652, 1599, 1528, 1469, 1407, 1372, 1308, 1165, 1129, 945, 769, 819, 722, 699; 1H NMR δ 7.93 (d, J = 9.0 Hz, 2H), 6.55 (d, J = 9.0 Hz, 2H), 5.82 (ddt, J = 17.0, 10.3, 6.6Hz, 1H), 4.91 - 5.04 (m, 2H), 3.16 (t, J = 7.2 Hz, 2H, CH2N), 2.01 - 2.09 (m, 2H), 1.63 (quin, J = 7.2 Hz, 2H), 1.36 - 1.41 (m, 2H), 1.27 - 1.34 (m, 10H); 13C NMR δ 172.6, 152.7, 139.1, 132.3, 116.9, 114.1, 111.2, 43.3, 33.8, 29.5, 29.4, 29.3, 29.2, 29.1, 28.9, 27.0; MS (negative mode), m/z calcd for C18H26NO2 (M-H)- 288.2, found 288.3.
  • 31
  • [ 112-45-8 ]
  • [ 65-49-6 ]
  • [ 1560910-92-0 ]
YieldReaction ConditionsOperation in experiment
50% With sodium cyanoborohydride In ethanol at 25℃; for 18h; Inert atmosphere; 2-Hydroxy-4-undec-10-enylamino-benzoic acid (4). To a solution of 10-undecenal (13) (1.2 mmol) and 4-amino-2-hydroxybenzoic acid (15) (1.4 mmol) in 3 mL of ethanol under argon, was added NaCNBH3 (3.0 mmol) in two portions, and the resulting solution was stirred at 25 °C for 18 h. The reaction solution was diluted with diethyl ether, washed twice with water and brine, dried (MgSO4), concentrated, and column chromatographed on silica gel using a mixture of hexane and ethyl acetate (9:1) as an eluent to yield 0.18 g (50% yield) of compound 4: 1H NMR δ 10.71 (br. s., 1H), 7.66 (d, J = 8.1 Hz, 1H), 6.10 (dd, J = 8.1, 2.3 Hz, 1H), 6.05 (d, J = 2.3 Hz, 1H), 5.74 - 5.87 (m, 1H), 4.90 - 5.03 (m, 2H), 3.14 (t, J = 7.0 Hz, 2H), 1.99 - 2.08 (m, 2H), 1.62 (quin, J = 7.2 Hz, 2H), 1.34 - 1.41 (m, 2H), 1.22 - 1.33 (m, 10H); 13C NMR δ 174.8, 164.7, 155.6, 139.4, 132.4, 114.4, 106.3, 100.5, 97.5, 43.4, 34.0, 29.7, 29.6, 29.5, 29.4, 29.3, 29.1, 27.2; MS (negative mode), m/z calcd for C18H26NO3 (M-H)- 304.2, found 304.6.
  • 32
  • [ 112-45-8 ]
  • [ 149051-24-1 ]
  • [ 1618680-46-8 ]
YieldReaction ConditionsOperation in experiment
96% Stage #1: ω-bromononanyl dimethyl-tert-butylsilyl ether With magnesium In diethyl ether; ethylene dibromide for 5h; Reflux; Stage #2: 10-Undecenal In diethyl ether; ethylene dibromide at 0 - 30℃; 1-((tert-Butyldimethylsilyl)oxy)icos-19-en-10-ol (4) In a flame-dried three necked flask equipped with a 100 mL addition funnel and a condenser, freshly ground magnesium turnings (31.8 g, 1.308 mol) and dry diethyl ether (240 mL) were added. A few drops of1,2-dibromoethane were added to increase the magnesium surface area and the suspension was allowed to stir for 50 minutes at room temperature. Compound 2 (88.2 g, 261.5 mmol) was subsequently added dropwise at a rate that maintained a slight reflux. After the addition, the solution was refluxed for 5 hours. The Grignard reagent was cooled to room temperature and added dropwise to an undec-10-enal (40.0 g, 237.7 mmol) solution in diethyl ether (400 mL) at0 °C. The resulting solution was allowed to warm slowly to room temperature and was subsequently heated at 30 °C for 4 hours. The reaction was quenched at 0 °C with a saturated solution of ammonium chloride. The biphasic mixture was extracted with Et2O. The organic fractions were washed with brine and dried over anhydrous MgSO4. The solvent was removed invacuo to afford a yellow oil. The crude product was purified by column chromatography using hexanes/ethyl acetate (95:5) as eluent affording 97.2 g of 4 as a white solid (96%). Melting point:36-37.5 °C; 1H NMR (300 MHz, Chloroform-d) δ (ppm) 5.82 (ddt, J = 17.1, 10.3, 6.7 Hz, 1H),5.05-4.90 (m, 2H), 3.60 (m, 3H), 2.09-1.99 (m, 2H), 1.72-1.20 (m, 30H), 0.90 (s, 9H), 0.05 (s,6H); 13C NMR (75 MHz, Chloroform-d) δ (ppm) 139.4, 114.3, 72.2, 63.6, 37.7, 34.0, 33.1, 29.92,29.86, 29.80, 29.72, 29.66, 29.34, 29.15, 26.29, 26.24, 26.22, 26.02, 25.88, 18.6, -5.0; IR υmax=3337, 3082, 2922, 2849, 1647, 1475 cm-1; DART/HRMS: [M+H]+ calculated for C26H54O2Si: 427.3966, found: 427.3976; Elemental analysis: calculated: C 73.17%, H 12.75%, found: C73.46%, H 13.00%.
  • 33
  • [ 887144-97-0 ]
  • [ 7677-24-9 ]
  • [ 112-45-8 ]
  • 11-oxo-2-(2,2,2-trifluoroethyl)undecanenitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
81% With (2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline)CuBr In acetonitrile at 20℃; for 0.5h; Inert atmosphere; 1 4.3 Typical procedure for cyanotrifluoromethylation of alkenes General procedure: General procedure B: To a dried glass tube, Togni reagent 2 (99mg, 0.3mmol, 1.5equiv), (L3)CuBr (10mg, 0.02mmol, 0.1equiv) and CH3CN (1.0mL) were added under N2 atmosphere, followed by substrate 1 (0.2mmol, 1.0equiv) and TMSCN (54μL, 0.4mmol, 2.0equiv). After the reaction mixture was stirred at room temperature for 0.5h, the mixture was concentrated under vacuum. The residue was purified by column chromatography on silica gel with a gradient eluent of petroleum ether and ethyl acetate to afford the product. General procedure B: Pale yellow liquid; 42.7mg, 81%; 1H NMR (400MHz, CDCl3): δ 9.75 (s, 1H), 2.87-2.80 (m, 1H), 2.60-2.46 (m, 1H), 2.42 (t, J=7.2Hz, 2H), 2.36-2.26 (m, 1H), 1.74-1.52 (m, 5H), 1.40-1.26 (m, 9H); 13C NMR (100MHz, CDCl3): δ 202.9, 125.1 (q, J=275.8Hz), 119.7, 43.8, 36.3 (q, J=29.8Hz), 32.0, 29.1, 29.0, 28.9, 28.7, 26.6, 25.5 (q, J=3.0Hz), 21.9; 19F NMR (376MHz, CDCl3): δ -65.0 (t, J=9.4Hz); HRMS (ESI), m/z: calcd. for C13H18F3NO 261.1340 [M-2H]+, found 261.1337.
  • 34
  • [ 75-61-6 ]
  • [ 112-45-8 ]
  • 12-bromo-12,12-difluorododecanal [ No CAS ]
YieldReaction ConditionsOperation in experiment
78% Stage #1: dibromodifluoromethane; 10-Undecenal With tetrahydrofuran; eosin at 20℃; for 5h; Irradiation; Inert atmosphere; Schlenk technique; Stage #2: With potassium hydrogencarbonate for 5h; Inert atmosphere; Irradiation; Cooling with ice; Schlenk technique;
78% With eosin y In tetrahydrofuran at 20℃; for 10h; Inert atmosphere; 5 In 25 ml reaction tube add catalyst (16.2 mg, 0 . 025mmol, 5 µM %), (84 mg, 0 . 5mmol, 1.0 equiv.) and THF (15 ml), sealed by a rubber plug, and the 3M adhesive tape seal, then adding CF2Br2(630 mg, 6.0 equiv. , 3.0mmol), liquid nitrogen freezing, oil pump pumping the oxygen, nitrogen, thawing, so cycle three times. The final blue LED lamp is placed at a distance of 2 cm at, room temperature reaction 10h. After the reaction, the solvent is removed under reduced pressure directly, the obtained crude product by column chromatography (hexane: ethyl acetate=20:1), to obtain the product (116 mg), yield: 78%.
  • 35
  • [ 5153-67-3 ]
  • [ 112-45-8 ]
  • [ 1262281-23-1 ]
YieldReaction ConditionsOperation in experiment
95% With 4-nitro-phenol In dichloromethane at 20℃; for 4h; stereoselective reaction;
  • 36
  • [ 112-45-8 ]
  • [ 1275597-05-1 ]
  • (±)-2-(dec-9-en-1-yl)-6-methoxy-4,4-bis(3-methoxyphenyl)-4H-benzo[d][1,3]dioxine [ No CAS ]
YieldReaction ConditionsOperation in experiment
100% In toluene at 20℃; for 72h; Inert atmosphere; 2.h h) Synthesis of2-(dec-9-en-l-yl)-6-methoxy-4,4-bis(3-methoxyphenyl)-4H- benzo[ d][ l,3]dioxine h) Synthesis of2-(dec-9-en-l-yl)-6-methoxy-4,4-bis(3-methoxyphenyl)-4H- benzo[ d][ l,3]dioxine A mixture of 2-(hydroxybis(3-methoxyphenyl)methyl)-4-methoxyphenol (1.12 g, 3.1 mmol), 10-undecenal (0.37 g, 2.2 mmol) and 4-methylbenzenesulfonic acid hydrate (0.04 g, 0.2 mmol) in toluene (20 mL) was stirred at room temperature for 72 h. The reaction mixture was concentrated. Flash chromatography (Si02, heptane/ethyl acetate 3: 1) gave 1.18 g (quant.) of the target compound. 1H-NMR (500 MHz): 7.24 (t, J = 7.9, 1 H), 7.15 (t, J = 8.0, 1 H), 6.97-6.91 (m, 2 H), 6.91-6.84 (m, 2 H), 6.82 (d, J = 9.0, 1 H), 6.80-6.74 (m, 2 H), 6.73 (dd, J = 9.0, 3.2, 1 H), 6.40 (d, J = 2.9, 1 H), 5.85-5.75 (m, 1 H), 5.02-4.89 (m, 3 H), 3.74 (s, 3 H), 3.72 (s, 3 H), 3.63 (s, 3 H), 2.06-1.99 (m, 2 H), 1.91-1.75 (m, 2 H), 1.54-1.31 (m, 4 H), 1.31-1.10 (m, 8 H). 13C-NMR (125.8 MHz): 159.37, 159.19, 152.78, 147.48, 146.53, 145.83, 139.21, 128.87, 128.72, 125.76, 121.79, 120.76, 117.50, 114.91, 114.82, 114.26, 114.12, 114.10, 113.38, 112.51, 95.23, 83.99, 55.59, 55.20, 55.14, 34.51, 33.79, 29.47, 29.37, 29.35, 29.10, 28.91, 23.55.
100% With toluene-4-sulfonic acid In toluene at 20℃; for 72h; Inert atmosphere;
  • 37
  • [ 112-45-8 ]
  • 2-(hydroxybis(3-(methylthio)phenyl)methyl)-4-methoxyphenol [ No CAS ]
  • (±)-2-(dec-9-en-1-yl)-6-methoxy-4,4-bis(3-(methylthio)phenyl)-4H-benzo[d][1,3]dioxine [ No CAS ]
YieldReaction ConditionsOperation in experiment
63% With toluene-4-sulfonic acid In cyclohexane for 2h; Inert atmosphere; Reflux; 2.i i) Synthesis of2-( dec-9-en-l -yl)-6-methoxy-4,4-bis( 3-( methylthio )phenyl)-4H- benzo[ d][ l,3]dioxine i) Synthesis of2-( dec-9-en-l -yl)-6-methoxy-4,4-bis( 3-( methylthio )phenyl)-4H- benzo[ d][ l,3]dioxine A mixture of 2-(hydroxybis(3-(methylthio)phenyl)methyl)-4-methoxyphenol (1.0 g, 2.5 mmol), 10-undecenal (0.42 g, 2.5 mmol) and 4-methylbenzenesulfonic acid hydrate (0.05 g, 0.3 mmol) in cyclohexane (20 mL) was stirred under reflux with azeotropic removal of water for 2 h. The reaction mixture was left cooling to room temperature, washed with a saturated aqueous solution of NaHC03 (50 mL), dried (Na2S04) and concentrated. Flash chromatography (Si02, heptane/ethyl acetate 9: 1) gave 0.87 g (63%) of the target compound. 1H-NMR (500 MHz): 7.29-7.08 (m, 7 H), 6.95-6.90 (m, 1 H), 6.83 (d, J = 9.0, 1 H), 6.75 (dd, J = 9.0, 2.9, 1 H), 6.36 (d, J = 6.9, 1 H), 5.85-5.75 (m, 1 H), 5.02-4.88 (m, 3 H), 3.64 (s, 3 H), 2.41 (s, 3 H), 2.39 (s, 3 H), 2.06-1.99 (m, 2 H), 1.89-1.74 (m, 2 H), 1.52-1.31 (m, 4 H), 1.31-1.17 (m, 8 H). 13C-NMR (125.8 MHz): 152.86, 146.56, 146.49, 144.82, 139.21, 138.60, 138.16, 128.40, 128.26, 126.84, 126.14, 125.99, 125.88, 125.56, 125.28, 125.12, 117.67, 114.90, 114.23, 114.11, 95.21, 83.84, 55.63, 34.45, 33.80, 29.47, 29.37, 29.34, 29.10, 28.91, 23.52, 15.77, 15.63.
63% With toluene-4-sulfonic acid In cyclohexane for 2h; Reflux; Dean-Stark; Inert atmosphere;
  • 38
  • [ 112-45-8 ]
  • [ 6326-60-9 ]
  • (±)-2-(dec-9-en-1-yl)-4,4-diphenyl-4H-benzo[d][1,3]dioxine [ No CAS ]
YieldReaction ConditionsOperation in experiment
100% With toluene-4-sulfonic acid In toluene at 20℃; for 18h; Inert atmosphere; 3.a Synthesis of( ±)-2-(dec-9-en-l-yl)-4,4-diphenyl-4H-benzo[d][l,3]dioxine Synthesis of( ±)-2-(dec-9-en-l-yl)-4,4-diphenyl-4H-benzo[d][l,3]dioxine A mixture of 2-(hydroxydiphenylmethyl)phenol (0.50 g, 1.8 mmol), 10-undecenal (0.20 g, 1.2 mmol) and 4-methylbenzenesulfonic acid hydrate (0.02 g, 0.1 mmol) in toluene (10 mL) was stirred at room temperature for 18 h. The reaction mixture was concentrated. Flash chromatography (Si02, heptane/ethyl acetate 7: 1) gave 0.52 g (quant.) of the target compound. 1H-NMR (500 MHz): 7.37-7.31 (m, 5 H), 7.27-7.19 (m, 5 H), 7.18-7.12 (m, 1 H), 6.92-6.88 (m, 1 H), 6.84-6.79 (m, 2 H), 5.86-5.75 (m, 1 H), 5.02-4.95 (m, 2 H), 4.95-4.89 (m, 1 H), 2.07-1.99 (m, 2 H), 1.91-1.77 (m, 2 H), 1.52-1.31 (m, 4 H), 1.31-1.15 (m, 8 H). 13C-NMR (125.8 MHz): 152.49 (s), 146.22 (s), 144.32 (s), 139.22 (d), 129.83 (d), 129.27 (d), 128.27 (d), 128.19 (d), 128.00 (d), 127.92 (d), 127.79 (d), 127.42 (d), 125.44 (s), 120.03 (d), 117.02 (d), 114.11 (t), 95.23 (d), 84.11 (s), 34.48 (t), 33.79 (t), 29.44 (t), 29.36 (t), 29.30 (t), 29.09 (t), 28.90 (t), 23.40 (t).
100% With toluene-4-sulfonic acid In toluene at 20℃; for 18h; Inert atmosphere;
  • 39
  • [ 112-45-8 ]
  • 2-(hydroxydiphenylmethyl)-6-methoxyphenol [ No CAS ]
  • (±)-2-(9-decenyl)-8-methoxy-4,4-diphenyl-4Hbenzo[d][1,3]dioxine [ No CAS ]
YieldReaction ConditionsOperation in experiment
97% With toluene-4-sulfonic acid In toluene at 20℃; for 72h; Inert atmosphere; 3.b Synthesis of 2-(9-decenyl)-8-methoxy-4,4-diphenyl-4H-benzo[d] [1 ,3] dioxine Synthesis of 2-(9-decenyl)-8-methoxy-4,4-diphenyl-4H-benzo[d] [1 ,3] dioxine A mixture of 2-(hydroxydiphenylmethyl)-6-methoxyphenol (1.00 g, 3.3 mmol), 10-undecenal (0.37 g, 2.2 mmol) and 4-methylbenzenesulfonic acid hydrate (0.04 g, 0.2 mmol) in toluene (11 mL) was stirred at room temperature for 72 h. The reaction mixture was concentrated. Flash chromatography (Si02, heptane/ethyl acetate 7: 1, then ethyl acetate) gave 0.97 g (97%) of the target compound. 1H-NMR: 7.39-7.30 (m, 5 H), 7.28-7.18 (m, 5 H), 6.79-6.72 (m, 2 H), 6.46-6.39 (m, 1 H), 5.86-5.74 (m, 1 H), 5.03-4.89 (m, 3 H), 3.89 (s, 3 H), 2.06-1.98 (m, 2 H), 1.98-1.85 (m, 2 H), 1.53-1.41 (m, 1 H), 1.41-1.30 (m, 3 H), 1.30-1.12 (m, 8 H). 13C-NMR: 148.22, 146.17, 144.28, 142.44, 139.24, 129.37, 128.24, 127.95, 127.78, 127.42, 126.13, 121.73, 119.35, 114.10, 109.79, 95.61, 84.06, 55.99, 34.43, 33.79, 29.42, 29.36, 29.21, 29.09, 28.90, 23.54
95% With toluene-4-sulfonic acid In toluene at 20℃; for 72h; Inert atmosphere;
  • 40
  • [ 936716-83-5 ]
  • [ 112-45-8 ]
  • (±)-2-(9-decenyl)-6-methoxy-4,4-diphenyl-4H-benzo[d][1,3]dioxine [ No CAS ]
YieldReaction ConditionsOperation in experiment
100% With toluene-4-sulfonic acid In toluene at 20℃; for 72h; Inert atmosphere; 3.c Synthesis of( ±)-2-( 9-decenyl)-6-methoxy-4,4-diphenyl-4H-benzo[ d][ l,3]dioxine Synthesis of( ±)-2-( 9-decenyl)-6-methoxy-4,4-diphenyl-4H-benzo[ d][ l,3]dioxine A mixture of 2-(hydroxydiphenylmethyl)-4-methoxyphenol (1.00 g, 3.3 mmol), 10-undecenal (0.37 g, 2.2 mmol) and 4-methylbenzenesulfonic acid hydrate (0.04 g, 0.2 mmol) in toluene (11 mL) was stirred at room temperature for 72 h. The reaction mixture was concentrated. Flash chromatography (Si02, heptane/ethyl acetate 7: 1) gave 1.01 g (quant.) of the target compound. 1H-NMR: 7.39-7.30 (m, 5 H), 7.27-7.17 (m, 5 H), 6.84 (d, 1 H), 6.74 (dd, 1 H), 6.36 (d, 1 H), 5.85-5.75 (m, 1 H), 5.01-4.95 (m, 1 H), 4.95-4.90 (m, 2 H), 3.62 (s, 3 H), 2.06-1.99 (m, 2 H), 1.89-1.74 (m, 2 H), 1.52-1.31 (m, 4 H), 1.31-1.13 (m, 8 H). 13, C-NMR: 152.77, 146.65, 146.13, 144.30, 139.21, 129.23, 128.11, 127.98, 127.92, 127.84, 127.43, 125.92, 117.55, 115.03, 114.11, 114.02, 95.16, 84.12, 55.56, 34.46, 33.79, 29.43, 29.36, 29.29, 29.09, 28.90, 23.44.
100% With toluene-4-sulfonic acid In toluene at 20℃; for 72h; Inert atmosphere;
  • 41
  • [ 112-45-8 ]
  • [ 7188-38-7 ]
  • [ 941172-00-5 ]
  • C32H47N3O6 [ No CAS ]
YieldReaction ConditionsOperation in experiment
99.7% With toluene-4-sulfonic acid In dichloromethane; dimethyl sulfoxide at 20℃; for 80h; Passerini product 23 derived from Biginelli acid 15, undec-10-enal and tert-butylisocyanide In a 5 mL round-bottomed flask, finely powdered Biginelli acid 15 (500 mg, 1.57 mmol, 1.20equiv) was dissolved in 1 mL dimethyl sulfoxide/dichloromethane (1:1). Subsequently, undec-10-enal (344 mg, 2.04 mmol, 409 µL, 1.30 equiv) and tert-butylisocyanide (170 mg, 2.04 mmol,196 µL) were added. The mixture was diluted with dichloromethane (0.5 mL) and stirred atroom temperature for 8 h. Subsequently, a second portion of aldehyde (79.3 mg, 0.30 equiv)and ioscyanide (39.2 mg, 0.30 equiv) were added to the mixture and stirred at roomtemperature for 3 d. The crude reaction mixture was added dropwise into a stirred emulsion of50 mL water and 50 mL dichloromethane. The organic phase was separated, dried oversodium sulfate and dried under reduced pressure. The oily residue was purified via column chromatography on silica gel eluting with a gradual solvent mixture of c-hexane and diethylether (0:1 1:0). The Passerini product 23 was obtained as a colorless oil (893 mg, 1.56mmol, 99.7%).IR (ATR): [cm-1] = 3323.2 (br, (N-H)), 2924.7 (m, (C-H)), 2853.1 (w, (C-H)), 1752.5(w (C=O)), 1681.5 (vs, (C=O)), 1529.2 (m), 1453.7 (m), 1385.8 (m), 1364.8 (m), 1309.4 (w),1278.1 (w), 1257.7 (w), 1176.3 (vs), 1103.6 (s), 1056.2 (m), 941.7 (w), 909.0 (w), 861.3 (w),828.5 (w), 759.6 (m), 697.5 (s), 651.6 (w).1H NMR (400 MHz, DMSO-d6): δ [ppm] = 8.16 (dd, J = 16.9, 3.6 Hz, 1 H, NH3), 7.43 (d, J =11.2 Hz, 1 H, NH28), 7.34 - 7.21 (m, 5 H, CHAr10-14), 5.84 - 5.73 (m, 1 H, CH34), 5.19 (t, J = 3.5Hz, 1 H, CH2), 5.02 - 4.91 (m, 2 H, CH233), 4.84 (t, J = 6.3 Hz, 1 H, CH23), 4.74 - 4.40 (m, 2 H,CH220), 4.06 - 3.96 (m, 2 H, CH217), 2.43 (d, J = 17.4 Hz, 3 H, CH39), 2.00 (q, J = 6.9 Hz, 2 H,CH235), 1.69 - 1.61 (m, 2 H, CH242), 1.27 - 1.21 (m, 21 H, CH329,31,32 + CH236-41), 1.14 - 1.07 (t,J = 7.1 Hz, 3 H, CH319).13C NMR (100 MHz, DMSO-d6): δ [ppm] = 168.95 (s, CO2R21),), 168.88 (s, CO2R21),), 168.14(s, CONR24), 165.43 (s, CO2R16), 165.41 (s, CO2R16), 152.49 (s, CO4), 152.27 (s, CO4), 148.84(s, C6), 148.76 (s, C6), 144.05 (s, CAr8), 143.87 (s, CAr8), 138.79 (s, CH34), 128.38 (s, CHAr10,14),128.34 (s, CHAr10,14), 127.41 (s, CHAr12), 126.49 (s, CHAr11,13), 126.38 (s, CHAr11,13), 114.60 (s,CH233), 103.21 (s, C1), 103.19 (s, C1), 74.31 (s, CH23), 74.16 (s, CH23), 59.65 (s, CH217), 53.15(s, CH2), 52.95 (s, CH2), 50.30 (s, C26), 50.26 (s, C26), 44.03 (s, CH220), 33.17 (s, CH235), 31.37(s, CH242), 31.28 (s, CH242), 28.79 (s, CH2), 28.75 (s, CH2), 28.65 (s, CH2), 28.54 (s, CH2),28.51 (s, CH2), 28.45 (s), 28.34 (s, CH329,31,32), 28.24 (s, CH241), 26.32 (s, CH241), 24.31(s,CH2), 24.27 (s, CH241), 15.53 (s, CH39), 15.48 (s, CH39), 13.93 (s, CH319).FAB - MS [m/z] (relative intensity): 570.4 (55%) [M + H]+, 524.3 (35%) [M - C2H5O]+, 492.3(10%) [M - C6H5]+, 317.1 (65%) [Fragment A]+, 273.1 (35%) [Fragment B]+.HRMS - FAB [m/z]: [M + H]+ calculated for 12C321H4816O614N3, 570.3538; found, 570.3538; Δ =0.04 mmu.
  • 42
  • [ 112-45-8 ]
  • [ 120446-58-4 ]
YieldReaction ConditionsOperation in experiment
77% With titanium tetrachloride; zinc In 1,4-dioxane for 2h; Sonication; Cooling; 1.A 8.0 g (122 mmol) of zinc powder and 150 mL of 1,4-dioxane were placed in a three-necked flask (300 mL), cooled with ice / salt with stirring, and 10.6 g (55.9 mmol ) titanium tetrachloride was slowly added dropwise. After completion of the dropwise addition, 6.23 g (37.0 mmol) of 10-undecenal was added by a syringe and stirred while irradiating with ultrasonic wave for 2 hours. Thereafter, 200 mL of 1N hydrochloric acid and 150 mL of diethyl ether were added and stirred, and then the mixture was filtered through celite to remove residual zinc powder. The organic layer of the filtrate was washed with an aqueous solution of ammonium chloride and saturated brine, concentrated under reduced pressure, and recrystallized in hexane to obtain 8.4 g (yield 77%) of compound (I-1).
1 g With methanol; samarium diiodide In tetrahydrofuran at 20℃; for 2h; 6 Example 6 A mixture of 10-undecenal (1.1 g), tetrahydrofuran (THF) (100 mL), methanol (1 mL), and a 0.1 M solution of samarium iodide (90 mL) were stirred at room temperature for two hours. Then, 100 mL of a hydrochloric acid (1 M) solution was added thereto and the mixture was extracted with diethyl ether. Then, the solvent was distilled off and the residue was purified by column chromatography, whereby docosa-1,21-diene-11,12-diol (1.0 g) was obtained. The resulting docosa-1,21-diene-11,12-diol showed the following spectrum data. 1H-NMR (CDCl3) δ ppm: 1.08 (J=6.8, m, 10H), 1.32 (m, 2H), 1.45 (m, 2H), 1.98 (s, 3H), 2.33 (J=7.6, t, 2H), 3.83 (J=6.5, t, 2H)
  • 43
  • [ 112-45-8 ]
  • [ 17814-85-6 ]
  • (Z)-hexadeca-5,15-dienoic acid [ No CAS ]
YieldReaction ConditionsOperation in experiment
73% Stage #1: (4-carboxybutyl)triphenylphosphonium bromide With potassium <i>tert</i>-butylate In tetrahydrofuran at 0 - 20℃; for 0.5h; Inert atmosphere; Stage #2: 10-Undecenal In tetrahydrofuran at 0 - 20℃; for 17h; Inert atmosphere; General procedure B: Wittig Reaction General procedure: Under an atmosphere of argon, the carboxyalkyl triphenyl phosphonium bromide (2.0 equiv) is dissolved in anhydrous THF (0.6 M) The suspension is cooled to 0 °C and KOt-Bu (powder or 1 M in THF; 4.0 equiv) is added dropwise. After 30 min of stirring at room temperature, a solution of the aldehyde (1.0 equiv) in anhydrous THF (2 M) is added dropwise at 0 °C. The reaction is stirred at room temperature and after the aldehyde is consumed, the mixture is quenched with 1 M aq. HCl solution (20 mL), extracted with Et2O (3 30 mL) and washed with H2O (2 60 mL). The combined organic layers are washed with brine, dried over anhydrous Na2SO4, filtered and the solvent is removed under reduced pressure. The residue is purified on silica gel to yield the title compound.
  • 44
  • [ 112-45-8 ]
  • [ 77485-00-8 ]
  • C35H36N2O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
68% With indium(III) chloride In dichloromethane at 20℃; for 52h; Synthesis of compound 11 To asolution of 91 (211 mg, 1.15 mmol) in CH2Cl2(12.0 mL, 0.05 M), were added 10-udecenal (97 mg, 0.577 mmol) and InCl3(13 mg, 0.058 mmol). After the mixture was stirred at room temperature for 52hours, powder of NaOH (70 mg, 2.50 mmol) was added. After the mixture was stirredfor 30 min, a pale yellow material was precipitated which was removed byfiltration through a cotton plug. The solvent was evaporated to give a residuethat was purified by flash column chromatography (SiO2,hexane/EtOAc). 11 was obtained as a darkblue oil (258 mg, 68%).1H NMR: δ 7.72 (d, J = 8.4 Hz,4H), 7.39 (t, J = 8.0 Hz, 4H), 7.24(m, 4H), 6.61 (s, 2H), 6.15 (s, 2H), 5.88 (m, 1H). 5.01 (dd, J = 17.6 Hz, 10.0 Hz, 2H), 4.02 (t, J = 7.6 Hz, 1H), 2.08 (m, 2H), 1.91 (m,2H), 1.22 (br, 12H); 13C NMR: δ 154.9, 148.4, 139.3, 136.6, 132.2, 128.8, 126.7, 125.5, 123.2, 114.3,94.4, 90.5, 40.1, 34.4, 33.9, 29.6, 29.2, 29.0, 27.7. HRMS (ESI): m/z calcd for C35H36O2N2Na1[M+Na]+ 539.26745, found 539.26718; IR (ATR): 3427, 2926, 2853, 1603, 1486, 1370 cm-1
  • 45
  • [ 112-45-8 ]
  • [ 1283722-06-4 ]
  • (2S,3R)-N,N-diallyl-3-hydroxy-2-methyltridec-12-enethioamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
95% In tetrahydrofuran at -70℃; for 120h; Inert atmosphere; General Procedure for the syn-Selective Catalytic AsymmetricAldol Reaction of Thioamide 5 General procedure: A flame-dried test tube (20 mL) equipped with a magnetic stirringbar and a three-way glass stopcock was charged with (S,S)-Ph-BPE (6.1 mg, 0.012 mmol), 2,2,5,7,8-pentamethylchromanol(6, 2.6 mg, 0.012 mmol), and mesitylcopper (2.2 mg, 0.012mmol) in a dry box. To the mixture was added dry THF (240 μL,0.05 M) with a syringe at r.t. After 5 min of stirring at the sametemperature, a yellow-green solution of (S,S)-Ph-BPE/mesitylcopper/6 was obtained, which was used within 15 min. Aflame-dried test tube (20 mL) was charged with N,N-diallylthiopropionamide(4a, 1.2 equiv), dry THF (0.2 M), 1 (1.0 equiv). Thereaction mixture was cooled to -70 °C. To the resulting cooledsolution was added dropwise previously prepared (S,S)-Ph-BPE/mesitylcopper/6 solution (3 mol%) to run the reaction.After a certain time at the same temperature, the precooledsolution of acetic acid in THF (0.1 M in THF, 1 mL), then saturatedNH4Cl aq. were added to quench the reaction. Theaqueous layer was extracted with ethyl acetate. The combinedorganic layers were washed with brine and dried with Na2SO4.The filtrate was concentrated under reduced pressure. Theresidual product was purified by silica gel column chromatography(n-hexane/EtOAc) to give 5.
  • 46
  • [ 112-45-8 ]
  • (S)-5-[(tert-butyldiphenylsilyl)oxy]-2-ethyl-1-pentanamine [ No CAS ]
  • (S)-5-[(tert-butyldiphenylsilyl)oxy]-2-ethyl-N-(10-undecenyl)-1-pentanamine [ No CAS ]
YieldReaction ConditionsOperation in experiment
29% With sodium cyanoborohydride; acetic acid In dichloromethane at 20℃; for 12h; (S)-5-[(tert-Butyldiphenylsilyl)oxy]-2-ethyl-N-(10-undecenyl)-1-pentanamine (10). 10-Undecenal (0.05 mL,0.25 mmol) and AcOH (0.02 mL) were added to a suspension of amine 8 (74 mg, 0.20 mmol) and NaBH3CN (25 mg, 0.40 mmol) in anhydrous CH2Cl2 (2.3 mL), and the mixture was stirred at room temperature for 12 h. Then, water was added, and the mixture was extracted with CH2Cl2. The combined organic extracts were dried over anhydrous Na2SO4 and filtered, and the solvent was removed under reduced pressure. Flash chromatography (from 98:2 hexane-EtOAc to EtOAc) of the residue gave secondary amine 10 (30 mg, 29% yield) as a colorless oil: [α]22D -12.3 (c 0.225, MeOH);1H-NMR (400 MHz, CDCl3, COSY, g-HSQC): δ = 0.90 (t, J = 7.4 Hz, 3H, CH3CH2), 1.05 [s, 9H, (CH3)3],1.24-1.58 (m, 18H, 9CH2), 1.65-1.77 (m, 3H, H-2, H-4), 2.01-2.06 (m, 2H, CH2=CHCH2), 2.81-2.84 (m,2H, H-5), 2.88-2.96 (m, 2H, CH2N), 3.66-3.70 (m, 2H, H-1), 4.91-5.01 (m, 2H, CH2=CH), 5.80 (m, 1H,CH2=CH), 7.32-7.55 (m, 6H, ArH), 7.63-7.67 (m, 4H, ArH); 13C-NMR (100.6 MHz, CDCl3): δ = 10.2(CH3CH2), 19.3 [C(CH3)3], 23.1 (CH2), 23.7 (CH2), 25.8 (CH2), 26.7 (CH2), 26.8 (CH2), 27.0 [C(CH3)3], 29.0(CH2), 29.1 (CH2), 29.2 (CH2), 29.4 (CH2), 29.8 (CH2), 33.9 (CH2=CHCH2), 36.3 (C-4), 49.0 (CH2N), 51.6(C-5), 63.8 (C-1), 114.3 (CH2=CH), 127.8 (CH-Ar), 129.8 (CH-Ar), 133.9 (C-Ar), 135.6 (CH-Ar), 139.3(CH2=CH).
  • 47
  • [ 112-45-8 ]
  • [ 41128-14-7 ]
  • 3-hydroxy-1-trityl-3-(undec-10-enoyl)indolin-2-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
88% With 2-(perfluorophenyl)-6,8-dihydro-5H-[1,2,4]triazolo[3,4-c][1,4]oxazin-2-ium tetrafluoroborate; sodium hydrogencarbonate In 1,2-dichloro-ethane at 20℃; for 24h; Inert atmosphere; Schlenk technique; Sealed tube; chemoselective reaction; Cross-Benzoin Reaction; General Procedure General procedure: To a dry 10 mL Schlenk tube equipped with a magnetic stir bar, were added NHC pre-catalyst D (0.01 mmol), isatin 2 (0.1 mmol), and NaHCO3 (0.1 mmol). The tube was sealed with a septum, evacuated and refilled with N2 (3 cycles). DCE (1 mL) and aldehyde 1 (0.15 mmol)were then added and the reaction mixture was stirred for 24 h at rt. After complete consumption of isatin 2, DCE was removed under reduced pressure and the residue was subjected to column chromatography using PE/EtOAc (9:1 → 5:1) as eluent to afford the desired product 3.
  • 48
  • [ 64-18-6 ]
  • [ 112-45-8 ]
  • [ 3956-80-7 ]
YieldReaction ConditionsOperation in experiment
92% With palladium diacetate; acetic anhydride; P(p-C6H4F)3 In toluene at 80℃; for 48h; Sealed tube; Inert atmosphere; regioselective reaction;
92% With palladium diacetate; acetic anhydride; P(p-C6H4F)3 In toluene at 80℃; for 48h; Inert atmosphere; Sealed tube; 9 Example 9 Synthesis of 12-aldehyde-dodecanoic acid (Structural Formula 4-i) TFPP stands for monophosphine ligand.Under the protection of argon gas, palladium acetate (0.025 mmol, 0.0056 g), monophosphine ligand TFPP (0.15 mmol, 0.0474 g), 0.5 mL of toluene, and 10-undecene having the structural formula 3-i were sequentially added to the reactor. Aldehyde (0.5 mmol, 0.0841 g), formic acid (0.75 mmol, 0.0345 g) and acetic anhydride (0.1 mmol, 0.0102 g). Screw on the bottle cap to seal and adjust the temperature of the heating plate to 80 ° C. After 48 hours, the heating was stopped, the mixture was cooled to room temperature, and separated by column chromatography (the volume ratio of petroleum ether: ethyl acetate was 10: 1) to obtain 0.098 g of a white solid.12-aldehyde-dodecanoic acid (see structural formula 4-i described in the above reaction formula), yield 92%, linear to branched chain ratio is greater than 100: 1
  • 49
  • [ 112-45-8 ]
  • [ 109-73-9 ]
  • [ 50279-04-4 ]
YieldReaction ConditionsOperation in experiment
66% In methanol at 23℃; for 2h;
66% Stage #1: 10-Undecenal; N-butylamine In methanol at 23℃; for 2h; Stage #2: With methanol; sodium tetrahydroborate at 0℃; for 0.5h; V-Butylundec-10-en-1 -amine (1ad) To a stirred solution of 10-undecenal (505 mg, 3.00 mmol, 1.00 equiv.) in MeOH (3 mL) was added n-butylamine (594 pL, 6.00 mmol, 2.00 equiv.), and the mixture was stirred at ambient temperature (23 °C) for 2 h. After this time, the reaction mixture was cooled to 0 °C and sodium borohydride (57.0 mg, 1.50 mmol, 0.75 equiv.) was added. The resulting mixture was stirred at 0 °C for 30 min, after which excess reductant was quenched by the addition of water (3 mL). The crude mixture was extracted with DCM (3 c 5 mL), the combined organic phases were dried over anhydrous magnesium sulfate and the dried solution was filtered. The filtrate was concentrated under reduced pressure and the resulting crude material was purified by flash column chromatography on silica gel (dichloromethane/MeOH/NH4OH) to afford the title compound. 66% yield; 1H NMR (600 MHz, CDCI3) d 5.81 (ddt, J = 16.9, 10.2, 6.7 Hz, 1 H), 4.99 (dd, J = 17.1 , 1.4 Hz, 1 H), 4.93-4.90 (m, 1 H), 2.67 (ddd, J = 12.7, 8.0, 3.0 Hz, 3H), 2.03 (q, J = 7.0 Hz, 2H), 1.67-1.51 (m, 3H), 1.43-1.20 (m, 15H), 0.92 (t, J = 7.3 Hz, (0360) 3H).
  • 50
  • [ 112-45-8 ]
  • [ 109-89-7 ]
  • [ 6308-95-8 ]
YieldReaction ConditionsOperation in experiment
30% In methanol at 23℃; for 2h;
30% Stage #1: 10-Undecenal; diethylamine In methanol at 23℃; for 2h; Stage #2: With methanol; sodium tetrahydroborate at 0℃; for 0.5h; A/,/V-Diethylundec-10-en-1 -amine (1ae) To a stirred solution of 10-undecenal (505 mg, 3.00 mmol, 1.00 equiv.) in MeOH (3 mL) was added A/,A/-diethylamine (621 pL, 6.00 mmol, 2.00 equiv.), and the mixture was stirred at ambient temperature (23 °C) for 2 h. After this time, the reaction mixture was cooled to 0 °C and sodium borohydride (57.0 mg, 1.50 mmol, 0.75 equiv.) was added. The resulting mixture was stirred at 0 °C for 30 min, after which excess reductant was quenched by the addition of water (3 mL). The crude mixture was extracted with DCM (3 * 5 mL), the combined organic phases were dried over anhydrous magnesium sulfate and the dried solution was filtered. The filtrate was concentrated under reduced pressure and the resulting crude material was purified by flash column chromatography on silica gel (dichloromethane/MeOH/NH4OH) to afford the title compound. 30% yield. 1H NMR (600 MHz, CDCI3) d 5.81 (ddt, J = 16.9, 10.2, 6.7 Hz, 1 H), 4.99 (ddd, J = 17.1 , 3.6, 1.6 Hz, 1 H), 4.93-4.91 (m, 1 H), 2.51 (q, J = 7.2 Hz, 4H), 2.40-2.38 (m, 2H), 2.05-2.01 (m, 2H), 1.44-1.42 (m, 2H), 1.38-1.36 (m, 2H), 1.27-1.24 (m, 10H), 1.01 (t, J = 7.2 Hz, 6H); 13C NMR (150 MHz, CDCI3) d 139.4, 1 14.2, 53.2, 47.0 (2C), 34.0, 29.8, 29.7, 29.6, 29.3, 29.1 , 27.9, 27.2, 11.8 (2C); IR (neat) vmax: 2968, 2923, 2853, 2797, 1464, 1380, 1202, 1070, 991 , 908; HRMS (ESI+): exact mass calculated for [M+H]+ (C15H32N) requires m/z 226.2529, found m/z 226.2527.
  • 51
  • [ 112-45-8 ]
  • [ 4433-30-1 ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: diethyl ether / 3 h / 0 - 35 °C / Inert atmosphere 2: chloro(1,5-cyclooctadiene)rhodium(I) dimer; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; cesium acetate / tetrahydrofuran / 15 h / 70 °C / Glovebox; Sealed tube; Inert atmosphere
  • 52
  • [ 112-45-8 ]
  • [ 1166823-79-5 ]
YieldReaction ConditionsOperation in experiment
93% With oxalyl dichloride; 1,1'-sulfinylbisbenzene In dichloromethane at -78 - 20℃; Inert atmosphere; chemoselective reaction; General procedure for dichlorination of olefins or olefins with hydroxy orcarbonyl group using Ph 2 SO and (COCl) 2 General procedure: To a solution of oxalyl chloride (0.51 mL, 6.0 mmol, 1.2 equiv.) in CH 2 Cl 2 (10 mL)cooled at 78C was added dropwise a solution of diphenyl sulfoxide (1.21 g, 6.0 mmol,1.2 equiv.) in CH 2 Cl 2 (10 mL) under the atmosphere of nitrogen. After 10 min, a solu-tion of substrate (5 mmol, 1.0 equiv.) in CH 2 Cl 2 (10 mL) was added. The mixture wasthen allowed to warm up to the temperature and stirred until TLC showed the reactioncompleted. Distilled water (30 mL) was added dropwise at 0C. After stirring for10 min, the organic layer was separated and successively washed with brine. The com-bined organic extracts were dried (Na 2 SO 4 ), filtered, and concentrated in vacuum. For16, 34, 35, and 37, the residue was purified by flash chromatography (silica gel, petrol-eum ether/ethyl acetate 30:1 for 16, and 10:1 for 34, 35 and 37). For 17, 19, 21, 24,26, 28 and 32, the corresponding dichloroalkanes and the byproduct diphenyl sulfidecannot be separated by chromatography due to the similar polarity. The problem can besolved by oxidizing diphenyl sulfide to diphenyl sulfoxide to differentiate the polarity.The residue was dissolved in CH 3 CN (20 mL), then aqueous 30% H 2 O 2 (1.5 mL,15 mmol, 3.0 equiv.) and TMSCl (0.96 mL, 7.5 mmol, 1.5 equiv.) were added. The mix-ture was stirred at room temperature for 30 min. After the disappearance of diphenylsulfide, the reaction mixture was quenched by adding water (20 mL), extracted withCH 2 Cl 2 (3 20 mL), and the extract washed with brine, dried (Na 2 SO 4 ), filtered, andconcentrated in vacuum. Purification by flash chromatography (silica gel, petroleumether/ethyl acetate 20:1) afforded the corresponding dichloroalkanes.
  • 53
  • [ 112-45-8 ]
  • [ 4648-54-8 ]
  • dec-9-en-1-ylcarbamoyl azide [ No CAS ]
YieldReaction ConditionsOperation in experiment
55% With tert-Butyl peroxybenzoate; copper(II) bis(oxalato)cuprate(II) monohydrate In acetonitrile at 70℃; for 16h; Inert atmosphere; Schlenk technique; Copper-Catalyzed Azidation of Aldehydes; Phenylcarbamoyl Azide(3a); Typical Procedure (Table 1 and Scheme 2) Benzaldehyde (1a; 53 mg, 0.5 mmol, 1 equiv), TMSN3 (2; 173 mg, 1.5mmol, 3 equiv), MeCN (2 mL), TBPB (145 mg, 0.75 mmol, 1.5 equiv), and (CuC2O4)2·H2O (4 mg, 2.5 mol%) were placed in a Schlenk tube with a stirring bar under a N2 atmosphere. The reaction mixture was heated at 70 °C for 16 h, and then cooled to r.t. The reaction was quenched with EtOAc, and then washed with H2O (3 × 15 mL). The combined organic phases were dried (MgSO4). The solvent was removed by evaporation under vacuum and the residue was chromatographed on silica gel (PE/EtOAc 20:1 → 5:1) to yield 3a as a white solid; yield: 69.8 mg (86%); mp 106-107 °C (Lit.15 mp 106-107 °C).1H NMR (600 MHz, CDCl3): = 7.46 (d, J = 7.9 Hz, 2 H), 7.38 (br, 1 H),7.32 (t, J = 7.9 Hz, 2 H), 7.13 (t, J = 7.3 Hz, 1 H).13C NMR (150 MHz, CDCl3): = 154.37, 137.06, 129.18, 124.76,119.58.
  • 54
  • [ 112-45-8 ]
  • [ 5978-75-6 ]
  • (9H-fluoren-9-yl)undec-10-enylidene-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
In dichloromethane; cyclohexane at 0 - 20℃; for 2h; Schlenk technique; Inert atmosphere; Molecular sieve;
  • 55
  • [ 112-45-8 ]
  • [ 5978-75-6 ]
  • N-(1-(1,3-dioxolan-2-yl)dodec-11-en-2-yl)-9H-fluoren-9-imine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: cyclohexane; dichloromethane / 2 h / 0 - 20 °C / Schlenk technique; Inert atmosphere; Molecular sieve 2.1: cobalt(II) bromide / diethyl ether / 0.17 h / 25 °C / Sealed tube 2.2: 2.17 h / -20 - 25 °C / Sealed tube
  • 56
  • [ 112-45-8 ]
  • [ 53179-04-7 ]
YieldReaction ConditionsOperation in experiment
91% With ferric(III) bromide; trimethylsilylazide In acetonitrile at 80℃; for 4h;
  • 57
  • [ 112-45-8 ]
  • [ 5332-51-4 ]
YieldReaction ConditionsOperation in experiment
67% With trimethylsilylazide; tetrabutylammomium bromide; iron(II) bromide In neat (no solvent) at 60℃; for 4h; Irradiation;
  • 58
  • [ 67-56-1 ]
  • [ 112-45-8 ]
  • [ 149-73-5 ]
  • [ 65405-66-5 ]
YieldReaction ConditionsOperation in experiment
97.6% With povidone-iodine at 30℃; for 3h; Green chemistry; 5. General procedures General procedure: To a 25 mL round-bottomed flask was charged with starting material (1.0 mmol), PVP-I (76 mg, 0.03 mmol of effective iodine), Trimethyl orthoformate (1.0 mmol, 0.24 mL) and MeOH (2.0 mL). The mixture was stirred for 3 h at 30 °C. After that, the solvent was evaporated. The resulting mixture was suspended in water (20 mL)and extracted with EA (10 mL x 3). The combined organic layer was washed with brine (20 mL) and dried over anhydrous Na2SO4. After filtration and concentrated under reduced pressure, most of the products were pure enough. The residue could be further purified by flash column chromatography to give the fine products.
  • 59
  • [ 64-17-5 ]
  • [ 112-45-8 ]
  • [ 122-51-0 ]
  • [ 54986-31-1 ]
YieldReaction ConditionsOperation in experiment
96.1% With povidone-iodine at 30℃; for 3h; Green chemistry; 5. General procedures General procedure: To a 25 mL round-bottomed flask was charged with starting material (1.0 mmol), PVP-I (76 mg, 0.03 mmol of effective iodine), Trimethyl orthoformate (1.0 mmol, 0.24 mL) and MeOH (2.0 mL). The mixture was stirred for 3 h at 30 °C. After that, the solvent was evaporated. The resulting mixture was suspended in water (20 mL)and extracted with EA (10 mL x 3). The combined organic layer was washed with brine (20 mL) and dried over anhydrous Na2SO4. After filtration and concentrated under reduced pressure, most of the products were pure enough. The residue could be further purified by flash column chromatography to give the fine products.
  • 60
  • [ 112-45-8 ]
  • [ 3066-71-5 ]
  • C18H30O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
64% With C42H53N3O4Ru In tetrahydrofuran at 25℃; for 48h; Inert atmosphere; Glovebox; Sealed tube; stereoselective reaction;
  • 61
  • [ 64-18-6 ]
  • [ 112-45-8 ]
  • C12H22O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
57% With acetic anhydride; C27H25O3P; lithium chloride; palladium (II) chloride In 1,4-dioxane at 70℃; for 24h; Inert atmosphere; 17 Example 17. Carboxylic acid (see structural formula II-q): PdCl2 (0.0044g, 0.025mmol), LiCl (0.0212g, 0.50mmol) and ligand L (0.0214g, 0.050mmol) were added to a 2mL pressure-resistant tube, and 1.0mL of the first organic solvent 1,4-dioxygen was added Hexacyclic and 10-undecene aldehyde I-q (0.0841 g, 0.50 mmol) and acetic anhydride (0.0511 g, 0.50 mmol) and formic acid (0.046 g, 1.0 mmol) were charged with Ar, and the reaction was placed at 70 °C for 24 h. It was cooled to room temperature and purified by column separation. The specific conditions are: packing the column with petroleum ether, and the eluent is petroleum ether/ethyl acetate to obtain a colorless liquid II-q (0.0606 g, 57% yield), and the ratio of branched chain to straight chain is 6.5:1.
  • 62
  • [ 112-45-8 ]
  • [ 423-39-2 ]
  • C15H20F9IO [ No CAS ]
YieldReaction ConditionsOperation in experiment
96% With Au single-atom sites decorated hexagonal cadmiumsulfide nanocatalyst In N,N-dimethyl-formamide at 20℃; for 12h; Irradiation; Inert atmosphere; 2.4. Blue-LED-induced ATRA reactions The LED-induced ATRA reaction model is shown as Scheme 2.Briefly, the alkene 1 (0.3 mmol) and CatCdS-Au (4.2 mg) were addedto a glass tube equipped with a magnetic stir bar. The tube wasevacuated and refilled with argon for three times through a sealedseptum, and 1.5 mL anhydrous DMF was added and followed by afurther evacuated and refilled with argon for three times. Then, RfI(0.45 mmol) was added dropwise to the solution, and the tube wassealed and illuminated at room temperature for 12 h under a 32Wblue-LED annular lamp tape. The reaction mixture was quenchedby H2O and extracted for three times with ethyl acetate. Theorganic phase was collected and washed with water and brine,then it was dried over anhydrous Na2SO4 followed by a filtrationand concentrated by a rotary evaporator. The crude product waspurified by flash column chromatography on silica gel to obtainthe resultant product 2.
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