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CAS No. : | 7382-59-4 | MDL No. : | MFCD00060144 |
Formula : | C17H20O6 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | PPZSOILKWHVNNS-UHFFFAOYSA-N |
M.W : | 320.34 | Pubchem ID : | 6424189 |
Synonyms : |
|
Num. heavy atoms : | 23 |
Num. arom. heavy atoms : | 12 |
Fraction Csp3 : | 0.29 |
Num. rotatable bonds : | 7 |
Num. H-bond acceptors : | 6.0 |
Num. H-bond donors : | 3.0 |
Molar Refractivity : | 84.37 |
TPSA : | 88.38 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -7.04 cm/s |
Log Po/w (iLOGP) : | 2.93 |
Log Po/w (XLOGP3) : | 1.71 |
Log Po/w (WLOGP) : | 1.56 |
Log Po/w (MLOGP) : | 0.86 |
Log Po/w (SILICOS-IT) : | 2.17 |
Consensus Log Po/w : | 1.84 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -2.83 |
Solubility : | 0.477 mg/ml ; 0.00149 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.18 |
Solubility : | 0.211 mg/ml ; 0.000658 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -3.67 |
Solubility : | 0.0691 mg/ml ; 0.000216 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 0.0 |
Synthetic accessibility : | 3.39 |
Signal Word: | Danger | Class: | 9 |
Precautionary Statements: | P201-P264-P280-P301+P330+P331-P312 | UN#: | 3077 |
Hazard Statements: | H302-H361-H372-H410 | Packing Group: | Ⅲ |
GHS Pictogram: |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium metabisulfite; sodium hydroxide at 180℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; sulfur dioxide at 135℃; for 7h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen bromide In dichloromethane for 0.166667h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate In acetone for 4h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride | ||
With hydrogen; zinc(II) acetate dihydrate at 150℃; for 8h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; recorcinol at 150℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide at 150℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 15 % Chromat. 2: 28 % Chromat. 3: 30 % Chromat. | With oxygen; rose bengal In acetonitrile at 13℃; Irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | With sodium tetrahydroborate In ethanol at 5 - 25℃; for 3h; | |
55.4% | With sodium tetrahydroborate; sodium hydroxide at 20℃; for 6h; Inert atmosphere; | 3.5 5, guaiacylglycerol-β-guaiacyl ether synthesis Under stirring, 1.0 g of 4- (α- (2-methoxyphenoxy) -β-hydroxypropionyl) -guaiacol was dissolved inA 100mL 0.1mol / L NaOH solution in a three-necked flask, purged with nitrogen, adding 0.8g sodium borohydride, magnetic stirring at room temperatureUnder the reaction for 6 hours, after the reaction was completed, the reaction solution was diluted with dilute hydrochloric acid to pH 7.0 and extracted with methylene chloride, and washed with waterAfter the filtrate was evaporated under reduced pressure, the final product was obtained as white crystals with a yield of 55.4%. |
With sodium tetrahydroborate |
With sodium tetrahydroborate In ethanol at 26.84℃; | ||
With sodium tetrahydroborate; sodium hydroxide at 20℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trimethylsilyl bromide In dichloromethane for 0.0666667h; | ||
Stage #1: guaiacylglycerol-β-guaiacyl ether With trimethylsilyl bromide In dichloromethane Stage #2: With sodium hydrogencarbonate In dichloromethane Further stages.; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With 5%-palladium/activated carbon; hydrogen In ethanol; ethyl acetate | |
With sodium tetrahydroborate; hydrogen 1.) dioxane; 2.) ethanol; Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With [Mn(OAc){3-t-Bu-5-(CH2PPh3)salicylideneethylenediamine}]Cl2; dihydrogen peroxide; oxygen In methanol; water | |
24% | With Trametes versicolor laccase; oxygen In dimethyl sulfoxide at 25℃; for 0.583333h; Enzymatic reaction; | |
With Melanocarpus albomyces laccase; oxygen In 1,4-dioxane for 24h; sodium succinate buffer; |
With thermobifida fusca dyp-type peroxidase; dihydrogen peroxide; sodium acetate In acetone at 30℃; for 1h; Enzymatic reaction; | 3.2. Oxidation of b-aryl ether lignin model compound Dimeric b-aryl ether lignin model compounds have beenfrequently used to study the action of fungal lignin-oxidising enzymes[23], and bacterial DyPs [9,10] and laccases [24]. TfuDyP wasincubated with guaiacylglycerol-b-guaiacyl ether (1) at 1.6 mg/mlconcentration in 100 mM sodium acetate buffer pH 6.0 in thepresence of 1 mM hydrogen peroxide. Monitoring by reverse phaseHPLC revealed the formation of a new product at retention time16 min, as shown in Fig. 3B. The peakwas not formed in the absenceof enzyme or hydrogen peroxide. Analysis of this peak by electrospraymass spectrometry gave a sodiated ion at m/z 661.2255,consistent with molecular formula C34H38O12Na (calculated661.2255). MS-MS fragmentation of this species gave a majorfragment at m/z 343.2, consistent with the structure of the b-arylether monomer (MNa 343.2), implying that oxidative dimerizationof the model compound had taken place. The most likely structure,formed by CeC coupling of the free phenolic coupling unit in (1)would be the biphenyl structure shown in Fig. 3A, though otherisomeric structures are also possible. As shown in Table 1, TfuDyPalso showed oxidation activity towards Kraft lignin. | |
With dihydrogen peroxide Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With oxygen In chloroform at 24.84℃; for 48h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With buffer citrate phosphate; dihydrogen peroxide; benzotriazol-1-ol In 1,4-dioxane at 60℃; for 4h; Further byproducts given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With buffer citrate phosphate; dihydrogen peroxide; benzotriazol-1-ol In 1,4-dioxane at 60℃; for 4h; Further byproducts given; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 80 percent / bromine / ethanol / 2 h / Ambient temperature 2: 83 percent 3: 91 percent 4: 1.) NaBH4; 2.) H2 / 1.) dioxane; 2.) ethanol | ||
Multi-step reaction with 4 steps 1: 69 percent / Br2 / CHCl3; CCl4 / 1) 5 deg C, 20 min, 2) 5 deg C -> 40 deg C, 2 h 2: 95 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 3: 1) K2CO3, 2) 1 M NaOH / 1) DMSO, 25 deg C, 10 min, 2) DMSO, H2O, 25 deg C, 1 h 4: 78 percent / NaBH4 / ethanol / 3 h / 5 - 25 °C | ||
Multi-step reaction with 4 steps 1: bromine / cyclohexane; dichloromethane; ethanol / 20 °C / Inert atmosphere 2: potassium carbonate / acetone / 2 h / Reflux 3: potassium carbonate / water; 1,4-dioxane / 20 °C 4: 5%-palladium/activated carbon; hydrogen / ethyl acetate; ethanol |
Multi-step reaction with 5 steps 1: sodium hydride / dichloromethane; mineral oil / 90 °C / Inert atmosphere 2: 4-acetamidobenzenesulfonyl azide; triethylamine / acetonitrile / 0 - 20 °C 3: copper(II) hexafluoroacetylacetonate / 0.17 h / 100 °C / Molecular sieve; Microwave irradiation; Green chemistry 4: sodium tetrahydroborate / ethanol / 16 h / 25 °C 5: hydrogen; 10 mol% palladium on carbon / ethyl acetate / 16 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: bromotrimethylsilane / CH2Cl2 / 0.07 h 2: 80 percent / CH2Cl2 / 1 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: bromotrimethylsilane / CH2Cl2 / 0.07 h 2: 80 percent / CH2Cl2 / 1 h / Ambient temperature 3: dioxane; H2O |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 83 percent 2: 91 percent 3: 1.) NaBH4; 2.) H2 / 1.) dioxane; 2.) ethanol | ||
Multi-step reaction with 3 steps 1: 95 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 2: 1) K2CO3, 2) 1 M NaOH / 1) DMSO, 25 deg C, 10 min, 2) DMSO, H2O, 25 deg C, 1 h 3: 78 percent / NaBH4 / ethanol / 3 h / 5 - 25 °C | ||
Multi-step reaction with 3 steps 1: potassium carbonate / acetone / 2 h / Reflux 2: potassium carbonate / water; 1,4-dioxane / 20 °C 3: 5%-palladium/activated carbon; hydrogen / ethyl acetate; ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 91 percent 2: 1.) NaBH4; 2.) H2 / 1.) dioxane; 2.) ethanol | ||
Multi-step reaction with 2 steps 1: 1) K2CO3, 2) 1 M NaOH / 1) DMSO, 25 deg C, 10 min, 2) DMSO, H2O, 25 deg C, 1 h 2: 78 percent / NaBH4 / ethanol / 3 h / 5 - 25 °C | ||
Multi-step reaction with 2 steps 1: potassium carbonate / water; 1,4-dioxane / 20 °C 2: 5%-palladium/activated carbon; hydrogen / ethyl acetate; ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 73 percent / anh. potassium carbonate / ethanol / 4 h / Heating 2: 80 percent / bromine / ethanol / 2 h / Ambient temperature 3: 83 percent 4: 91 percent 5: 1.) NaBH4; 2.) H2 / 1.) dioxane; 2.) ethanol | ||
Multi-step reaction with 5 steps 1: pyridine / 4.84 °C 2: bromine / chloroform / -0.16 °C 3: N,N-dimethyl-formamide / 26.84 °C 4: potassium carbonate; sodium hydroxide / dimethyl sulfoxide / 26.84 °C 5: sodium tetrahydroborate / ethanol / 26.84 °C | ||
Multi-step reaction with 4 steps 1.1: copper(I) bromide / ethanol 2.1: sodium / ethanol 2.2: Cooling with ice 3.1: potassium carbonate / ethanol / 2 h / 49.84 °C 4.1: sodium tetrahydroborate; sodium hydroxide / 20 °C |
Multi-step reaction with 4 steps 1.1: copper(ll) bromide / ethanol / 1.5 h / 70 °C 2.1: sodium; sodium ethanolate / ethanol / 1 h / 70 °C / Sealed tube 2.2: 1 h / 70 °C 3.1: potassium carbonate / ethanol / 2 h / 50 °C 4.1: sodium hydroxide; sodium tetrahydroborate / 6 h / 20 °C / Inert atmosphere | ||
Multi-step reaction with 5 steps 1: potassium carbonate / N,N-dimethyl-formamide / 2 h / 70 °C 2: bromine / cyclohexane; dichloromethane; ethanol / 20 °C / Inert atmosphere 3: potassium carbonate / acetone / 2 h / Reflux 4: potassium carbonate / water; 1,4-dioxane / 20 °C 5: 5%-palladium/activated carbon; hydrogen / ethyl acetate; ethanol |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 99 percent / pyridine / 0.17 h / 5 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 96 percent / K2CO3 / dimethylformamide / 2 h / 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 96 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 3: 52 percent / CuBr2 / ethyl acetate |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 96 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 3: 52 percent / CuBr2 / ethyl acetate 4: 92 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 5: 90 percent / K2CO3 / dimethylsulfoxide / 0.17 h / 25 °C 6: O2, Rose Bengal / acetonitrile / 13 °C / Irradiation |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 96 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 3: 52 percent / CuBr2 / ethyl acetate 4: 94 percent / K2CO3 / dimethylformamide / 2 h / 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 96 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 3: 52 percent / CuBr2 / ethyl acetate 4: 92 percent / K2CO3 / dimethylformamide / 2 h / 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: 30 percent Chromat. / O2, Rose Bengal / acetonitrile / 13 °C / Irradiation 2: 96 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 3: 52 percent / CuBr2 / ethyl acetate 4: 92 percent / K2CO3 / dimethylformamide / 2 h / 25 °C 5: 90 percent / K2CO3 / dimethylsulfoxide / 0.17 h / 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: HBr / CH2Cl2 / 0.17 h / Ambient temperature 2: bicarbonate / CH2Cl2 / 0.01 h | ||
Stage #1: guaiacylglycerol-β-guaiacyl ether With trimethylsilyl bromide In chloroform at 25℃; for 0.025h; Sealed tube; Stage #2: With sodium hydrogencarbonate In chloroform; water for 0.00277778h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: HBr / CH2Cl2 / 0.17 h / Ambient temperature 2: bicarbonate / CH2Cl2 / 0.01 h 3: 90 percent / H2O / 45 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: HBr / CH2Cl2 / 0.17 h / Ambient temperature 2: bicarbonate / CH2Cl2 / 0.01 h 3: alkali / H2O / 0 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: HBr / CH2Cl2 / 0.17 h / Ambient temperature 2: bicarbonate / CH2Cl2 / 0.01 h 3: 90 percent / H2O / 45 °C 4: pyridine / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With iron(III) chloride; sodium hydroxide; water In ethanol for 1.66667h; Inert atmosphere; Heating; | ||
With Streptomyces viridosporus T7A small laccase In aq. buffer at 25℃; Irradiation; Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | Stage #1: guaiacylglycerol-β-guaiacyl ether With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In water; carbonic acid dimethyl ester at 20℃; Stage #2: With sodium oxalate In water; carbonic acid dimethyl ester Stage #3: acetic anhydride With pyridine |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | With MoO2(2+)*C2H6OS*2Cl(1-); potassium carbonate In dimethyl sulfoxide for 0.0833333h; Microwave irradiation; | Preparation of Intermediate 21 A mixture of 7 DMSO (5 mL), the model compound 6GG (96 mg 0.3 mmol), 8 K2CO3 (62 mg, 0.45 mmol) and MoO2Cl2(DMSO)2 (4 mg, 5 mol %) was irradiated in 50 mL HP-500 vessel in the microwave cavity at the reported temperature for 5 min. The reaction mixture was cooled to room temperature and 20 mL 9 water was added. The mixture was extracted in 10 ethyl acetate (3×15 mL). The combined organic layers were washed with water and then satd. brine to completely remove the excess of DMSO, dried over anhydrous Na2SO4, filtered, and then the solvents were removed under reduced pressure. The crude products were purified through a 50 g silica-gel column by flash chromatography (n-hexanes/EtOAc=2:1) to obtain compound 11 21 as a yellow oil in 65% yield. NMR (500 MHz, acetone-d6): δH 3.66 (3H, s, OCH3), 3.86 (3H, s, OCH′3), 4.11 (2H, d, J=6.25 Hz, Hγ), 6.20 (1H, S, Hα), 6.70 (1H, d, J=8.28 Hz, H5), 6.80 (1H, m, H6′), 6.93-6.98 (3H, m, H6, H1′ and H5′), 7.03 (1H, d, J=8.07 Hz, H2′), 7.29 (1H, d, J=2.2 Hz, H2), 7.60 (1H, S, OH); δC: 55.77 (OCH3), 56.18 (OCH3′), 61.90 (γ), 112.48 (C2), 113.54 (C2′), 114.13 (Cα), 115.48 (C5), 116.63 (C5′), 121.56 (C6′), 122.96 (C6), 123.56 (C1′), 127.66 (C1), 145.90 (C4′), 146.58 (C4), 147.90 (C3), 150.08 (C3′), 151.08 (Cβ). HR-MS (ESI) calcd for C17H18O5 [(M+Na)+]: 325.1046; found: 325.1043. |
6% | With water; [methyl-1H-imidazolium] chloride at 110℃; for 0.25h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76.4% | With water; [methyl-1H-imidazolium] chloride at 150℃; for 1h; Sealed vial; | |
With dihydrogen peroxide In water; acetonitrile at 150℃; for 0.333333h; Microwave irradiation; | ||
With hydrogen; ytterbium(III) triflate In methanol at 160℃; for 2h; Autoclave; Sealed tube; |
23 %Chromat. | With Ni nanoparticles supported on framework ZIF-8 In methanol at 160℃; for 3h; Inert atmosphere; | |
24.7 %Chromat. | With sulfuric acid; ethylene glycol at 185℃; for 0.333333h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: potassium carbonate; sodium hydroxide / dimethyl sulfoxide / 26.84 °C 2: sodium tetrahydroborate / ethanol / 26.84 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: bromine / chloroform / -0.16 °C 2: N,N-dimethyl-formamide / 26.84 °C 3: potassium carbonate; sodium hydroxide / dimethyl sulfoxide / 26.84 °C 4: sodium tetrahydroborate / ethanol / 26.84 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: N,N-dimethyl-formamide / 26.84 °C 2: potassium carbonate; sodium hydroxide / dimethyl sulfoxide / 26.84 °C 3: sodium tetrahydroborate / ethanol / 26.84 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 81.2% 2: 30.5% | With 2C7H13N2O3S(1+)*H4P2Mo18O62(2-); oxygen In ethanol at 140℃; for 14h; | |
With Rhodococcus josti RHA1 recombinant DypB peroxidase; dihydrogen peroxide; manganese(ll) chloride at 30℃; for 48h; aq. buffer; Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1.1: sodium / ethanol 1.2: Cooling with ice 2.1: potassium carbonate / ethanol / 2 h / 49.84 °C 3.1: sodium tetrahydroborate; sodium hydroxide / 20 °C | ||
Multi-step reaction with 3 steps 1.1: sodium; sodium ethanolate / ethanol / 1 h / 70 °C / Sealed tube 1.2: 1 h / 70 °C 2.1: potassium carbonate / ethanol / 2 h / 50 °C 3.1: sodium hydroxide; sodium tetrahydroborate / 6 h / 20 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 84% 2: 84% | With palladium 10% on activated carbon; hydrogen; zinc(II) acetate dihydrate In methanol at 150℃; | |
With hydrogen In methanol at 150℃; for 2h; Sealed tube; | ||
1: 28.1 %Chromat. 2: 17.5 %Chromat. | With sulfuric acid; 5% active carbon-supported ruthenium; ethylene glycol at 185℃; for 0.333333h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | With N-hydroxyphthalimide; oxygen In acetone at 20℃; for 30h; Irradiation; | |
81% | With N-hydroxyphthalimide; oxygen; 4,4′-bis(diphenylamino)benzophenone In acetone at 20℃; for 24h; Irradiation; | |
60% | With D-glucose; 5 mol% Pd/C In water; ethyl acetate at 80℃; for 48h; Green chemistry; chemoselective reaction; |
With Cα-dehydrogenase LigD In aq. buffer at 60℃; Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 43% 2: 16% 3: 15% | With hydrogenchloride; 4-acetylamino-2,2,6,6-tetramethyl-1-piperidinoxy; oxygen; nitric acid In water; acetonitrile at 45℃; for 24h; Sealed tube; Overall yield = 74 %; chemoselective reaction; | 3,4-Dimethoxy-benzaldehyde (3a) General procedure: To a 25 mL high pressure tube with a stir bar was added lignin model compound (1 mmol) and 5 mol % of NHAc-TEMPO (0.05 mmol, 10.6 mg). The tube was sealed, evacuated and filled to 1.1 atm with oxygen gas. Nitric acid (67%; 9.4 μL) (0.1 mmol, 6.3 mg) in 1 mL acetonitrile and 9.9 μL of hydrochloric acid (37%) (0.1 mmol, 3.65 mg) in 1 mL of acetonitrile was injected through the septum individually. Additional 3 mL of acetonitrile and 260 μL of water were injected. The reaction mixture was stirred for 24 h at 45° C. The solvent was evaporated and the residue was subjected to column chromatography to ascertain the amount of the corresponding carbonyl compound. The reaction of 1 with optimized catalyst system was repeated several times. The results are shown in FIG. 5. As is clearly depicted in the figure, the conversion and yield results for this catalytic system (HNO3/HCl/NHAc-TEMPO) are highly consistent. The six identical runs yielded statistically identical conversions and yields. Spectral data were consistent with those reported in the literature. (Jeena, V.; Robinson, R. S. Chem. Commun. 2012, 48, 299.) 1H NMR (400 MHz, CDCl3) δ 9.86 (s, 1H), 7.47 (dd, J=8.2, 2.0 Hz, 1H), 7.41 (d, J=1.8 Hz, 1H), 6.97 (d, J=8.2 Hz, 1H), 3.97 (s, 3H), 3.95 (s, 3H). HRMS (EI) calculated for C9H10O3 [M]+ 166.0630. found 166.0626. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With Oxone; C38H40CoN6O6S2 In methanol; water at 20℃; for 0.25h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With nickel-loaded rehydrated hydrotalcite catalyst |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: nickel-loaded rehydrated hydrotalcite catalyst 2: potassium carbonate; potassium iodide / acetone / Reflux 3: sodium tetrahydroborate / methanol / 3 h / 20 °C 4: nickel-loaded rehydrated hydrotalcite catalyst |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: nickel-loaded rehydrated hydrotalcite catalyst 2: potassium carbonate; potassium iodide / acetone / Reflux 3: sodium tetrahydroborate / methanol / 3 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: nickel-loaded rehydrated hydrotalcite catalyst 2: potassium carbonate; potassium iodide / acetone / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: nickel-loaded rehydrated hydrotalcite catalyst 2: potassium carbonate; potassium iodide / acetone / Reflux |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: nickel-loaded rehydrated hydrotalcite catalyst 2: potassium carbonate; potassium iodide / acetone / Reflux 3: sodium tetrahydroborate / methanol; ethyl acetate / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogen In methanol at 225℃; for 12h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
2.9% | With urea hydrogen peroxide adduct; horseradish peroxidase In aq. phosphate buffer; acetone for 1.75h; Enzymatic reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With C48H68N2O8V2 In dimethylsulfoxide-d6 at 100℃; for 24h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
59% | With Ni/Al<SUB>2</SUB>O<SUB>3</SUB>; hydrogen In methanol at 120℃; for 2h; Autoclave; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 5%-palladium/activated carbon; hydrogen; ytterbium(III) triflate at 160℃; for 2h; Autoclave; Sealed tube; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: oxygen; N-hydroxyphthalimide / acetone / 30 h / 20 °C / 760.05 Torr / Irradiation 2: N-ethyl-N,N-diisopropylamine; formic acid / acetonitrile / 24 h / 20 °C / Inert atmosphere; Irradiation |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1.1: poly phosphoric acid (PPA) / 0.33 h / 100 °C 2.1: copper(ll) bromide / ethanol / 1.5 h / 70 °C 3.1: sodium; sodium ethanolate / ethanol / 1 h / 70 °C / Sealed tube 3.2: 1 h / 70 °C 4.1: potassium carbonate / ethanol / 2 h / 50 °C 5.1: sodium hydroxide; sodium tetrahydroborate / 6 h / 20 °C / Inert atmosphere | ||
Multi-step reaction with 3 steps 1.1: potassium carbonate / acetone / 0.5 h / Reflux 1.2: 12 h / Reflux 2.1: lithium diisopropyl amide / tetrahydrofuran; hexane / 1.5 h / -78 °C 3.1: lithium aluminium tetrahydride / tetrahydrofuran / 3 h / 0 - 60 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 84% 2: 9% | With methylimidazolium bromide at 110℃; for 0.0833333h; Sealed tube; Inert atmosphere; Green chemistry; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 65% 2: 30 %Spectr. | With oxygen; sodium t-butanolate In <i>tert</i>-butyl alcohol at 30℃; for 16h; Green chemistry; chemoselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With lithium aluminium tetrahydride In tetrahydrofuran at 0 - 60℃; for 3h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 67 %Spectr. 2: 38 %Spectr. 3: 44 %Spectr. | With bis[dichloro(pentamethylcyclopentadienyl)iridium(III)]; sodium carbonate; 6,6′‐dihydroxyl‐2,2′‐bipyridine In 1,4-dioxane; water at 130℃; for 1h; Sealed tube; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
40 % de | With trimethylsilyl bromide In chloroform for 1h; Overall yield = 100 %; | Compound 20 (Quinone Methide): Quinone methide 20 was prepared by a method analogous to that of Ralph and Adams. (See Ralph, J.; Adams, B. R., Determination of the conformation and isomeric composition of lignin model quinone methides by NMR. Journal of Wood Chemistry and Technology 1983, 3, 183-194.) Chloroform (20 mL) containing compound 6GG (0.3 mmol, 96 mg) was placed in the 125 mL separatory funnel, and then bromotrimethylsilane (0.5 mmol, 76 mg) was added with swirling. The resulting solution was kept for 1 h and then cold saturated aqueous NaHCO3 solution was added and thoroughly mixed. The chloroform layer was separated, dried over MgSO4, and evaporated under vacuum. Pure compound 20 (100% yield) was collected as the yellow solid without further purification (syn: anti=7:3). syn-Isomer: NMR (500 MHz, acetone-d6) δH: 3.71 (3H, s, OCH3), 3.82 (3H, s, OCH3′), 3.8-4.02 (2H, m, γ), 4.22 (1H, m, β), 6.27 (1H, d, J=9.67 Hz, H5), 6.45 (1H, d, J=8.46 Hz, Hα), 6.52 (1H, d, J=2.2 Hz, H2), 6.79-6.99 (4H, m, H1′, H2′, H5′ and H6′), 7.20 (1H, dd, J=2.2 and 9.67 Hz, H6); δC: 55.42 (OCH3), 56.12 (OCH3′), 64.96 (Cγ), 78.52 (Cβ), 105.93 (C2), 113.42 (C2′), 118.72 (C5), 121.75 (C6′), 123.53 (C1′), 128.57 (Cα), 134.74 (C1), 142.12 (C5), 144.05 (C6), 147.91 (C4′), 151.72 (C3′), 153.97 (C3), 180.84 (C4). HR-MS (ESI) calcd for C17H18O5 [(M+H)+]: 303.1227; found: 303.1221. anti-Isomer: NMR (500 MHz, acetone-d6) δH: 3.69 (3H, s, OCH3), 3.82 (3H, s, OCH3′), 3.8-4.02 (2H, m, Hγ), 4.22 (1H, m, Hβ), 6.30 (1H, d, J=9.67 Hz, H5), 6.30 (1H, d, J=8.46 Hz, Hα), 6.50 (1H, d, J=2.2 Hz, H2), 6.79-6.99 (4H, m, H1′, H2′, H5′ and H6′), 7.69 (1H, dd, J=2.2 and 9.67 Hz, H6); δC: 55.42 (OCH3), 56.12 (OCH3′), 64.96 (Cγ), 78.52 (Cβ), 112.81 (C2), 113.46 (C2′), 119.22 (C5), 121.75 (C6′), 123.71 (C1′), 129.72 (Cα), 134.74 (C1), 142.12 (C5), 143.80 (C6), 147.82 (C4′), 151.88 (C3′), 153.27 (C3), 181.06 (C4). HR-MS (ESI) calcd for C17H18O5 [(M+H)+]: 303.1227; found: 303.1221. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tetra(n-butyl)ammonium hydroxide In water at 120℃; for 4h; Sealed tube; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tetra(n-butyl)ammonium hydroxide In water at 120℃; for 1h; Sealed tube; Overall yield = 8 mg; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With choline chloride; oxalic acid at 80℃; for 24h; | 4 Example 4 50 mg of 1-(4-hydroxy-3,5-dimethoxyphenyl)-2-(2-methoxyphenyl)-propane-1,3-diol and a eutectic solvent (chlorinated (Choline 30mmol, ethylene glycol 60mmol, oxalic acid 0.6mmol) placed in a glass bottle, stirred at 80°C, 800 rpm conditions for 24h;After the reaction was completed, it was cooled to room temperature under ice-water bath conditions, 10 mL of methylene chloride and 10 mL of water were added to the resulting system for extraction, and the obtained organic phase was subjected to rotary evaporation to remove the solvent.Afterwards, the obtained residue was subjected to column chromatography (eluent was ethyl acetate and pentane, volume ratio was 1:1, gradient elution was increased to all ethyl acetate),The resulting eluent was rotary evaporated to remove the solvent to obtain the reaction product.The reaction product was analyzed using a gas chromatography mass spectrometer and a gas chromatograph (hydrogen flame detector), and the result showed that the reaction product was a compound having the structure shown in formula II (referred to as compound II),After separation by column chromatography, the yield of Compound II was 82%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With 10 mol% palladium on carbon; hydrogen In ethyl acetate for 16h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: 4-acetamidobenzenesulfonyl azide; triethylamine / acetonitrile / 0 - 20 °C 2: copper(II) hexafluoroacetylacetonate / 0.17 h / 100 °C / Molecular sieve; Microwave irradiation; Green chemistry 3: sodium tetrahydroborate / ethanol / 16 h / 25 °C 4: hydrogen; 10 mol% palladium on carbon / ethyl acetate / 16 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sodium tetrahydroborate / ethanol / 16 h / 25 °C 2: hydrogen; 10 mol% palladium on carbon / ethyl acetate / 16 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: copper(II) hexafluoroacetylacetonate / 0.17 h / 100 °C / Molecular sieve; Microwave irradiation; Green chemistry 2: sodium tetrahydroborate / ethanol / 16 h / 25 °C 3: hydrogen; 10 mol% palladium on carbon / ethyl acetate / 16 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With dihydrogen peroxide In acetonitrile at 80℃; for 3h; | Catalytic reactions General procedure: Oxidation of lignin model compound wase undertaken in a150 mL semi-batch reactor equipped with a stirrer. In a typical procedure, 10 mmol of model compound, 50 ml of acetonitrileand 15 mmol of H2O2 were added, followed by 50 mg ofcatalyst (based the active species). After reaction at 80 °C for3 h, the catalyst was filtered off and the solvent wasevaporated under reduced pressure. The residues weredissolved in 25 μL of pyridine in the presence of 3,4-dimethoxytoluene as an internal standard for GC-MS analysis.For the lignin oxidation, the oxidized lignin were recovered byfiltration, and the obtained lignin sample was then dried at40 °C in vacuum for next analyses. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 33.1 %Chromat. 2: 10.3 %Chromat. 3: 14.4 %Chromat. 4: 5.8 %Chromat. 5: 30.7 %Chromat. | With hydrazine hydrate; iso-butanol at 80℃; for 24h; Inert atmosphere; Sealed tube; Irradiation; Green chemistry; |
Tags: 7382-59-4 synthesis path| 7382-59-4 SDS| 7382-59-4 COA| 7382-59-4 purity| 7382-59-4 application| 7382-59-4 NMR| 7382-59-4 COA| 7382-59-4 structure
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