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Product Details of [ 106429-07-6 ]

CAS No. :106429-07-6 MDL No. :MFCD11976758
Formula : C8H8N2OS Boiling Point : -
Linear Structure Formula :- InChI Key :LPMULTSCZSOABY-UHFFFAOYSA-N
M.W : 180.23 Pubchem ID :13821540
Synonyms :

Safety of [ 106429-07-6 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H302-H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 106429-07-6 ]

* 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 [ 106429-07-6 ]

[ 106429-07-6 ] Synthesis Path-Downstream   1~8

  • 1
  • [ 50850-93-6 ]
  • [ 106429-07-6 ]
YieldReaction ConditionsOperation in experiment
67% [1069] Step 2: (2-aminobenzo[d]thiazol-6-yl)methanol[1070] To a solution of ethyl 2-aminobenzo[d]thiazol-6-carboxylate (10.10 g, 45.44 mmol) prepared in Step 1 in THF (320 mL) was added portionwise LAH (7.59 g, 199.94 mmol) at 0 ?. The reaction mixture was stirred at room temperature for 7 hours. Water (8.0 mL), 20% sodium hydroxide (8.0 mL), and water (24 mL) were sequentially added to the reaction mixture, which was then stirred for 2 hours. The resulting solid was filtered and washed with ethyl acetate. The filtrate was concentrated under reduced pressure. The resulting solid was suspended with diethyl ether, filtered, and then dried under reduced pressure to give 5.52 g of the titled compound as a white solid (Yield: 67%).
67% With lithium aluminium tetrahydride; In tetrahydrofuran; at 20℃; for 7h; Step 2: (2-aminobenzo[d]thiazol-6-yl)methanol To a solution of ethyl 2-aminobenzo[d]thiazol-6-carboxylate (10.10 g, 45.44 mmol) prepared in Step 1 in THF (320 mL) was added portionwise LAH (7.59 g, 199.94 mmol) at 0 C. The reaction mixture was stirred at room temperature for 7 hours. Water (8.0 mL), 20% sodium hydroxide (8.0 mL), and water (24 mL) were sequentially added to the reaction mixture, which was then stirred for 2 hours. The resulting solid was filtered and washed with ethyl acetate. The filtrate was concentrated under reduced pressure. The resulting solid was suspended with diethyl ether, filtered, and then dried under reduced pressure to give 5.52 g of the titled compound as a white solid (Yield: 67%).
52% With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 20℃; for 24h; The ester (1.0 g, 4.5 mmol) was dissolved in anhydrous THF and the RB flask was cooled to 0 C. Then LiAlH4 was added slowly and the flask was stirred at 0 C. for additional 10 min. The flask was then stirred at room temperature for 24 h. The reaction was then cooled, quenched with methanol, NH4Cl Rochelle's salt and diluted with ethyl acetate (10 mL). The organic layer was separated and the aqueous layer was extracted with additional ethyl acetate (3×10 mL). The organic layers were combined, dried over Na2SO4 and concentrated under vacuo on a rotary evaporator to obtain a yellow solid. The crude product was purified via gradient silica gel column chromatography using a mixture of CH2Cl2 and methanol (100:1 to 5:1) to obtain the desired alcohol as yellow solid (420 mg, 52%). The alcohol (420 mg, 2.33 mmol) was dissolved in a mixture of CH2Cl2 and methanol (5:1) and MnO2 (81 mg, 9.32 mmol). The mixture was then stirred at room temperature for 48 h following which additional amount of MnO2 (40 mg) was added after TLC showed incompletion of the reaction. The mixture was stirred for additional 24 h and then filtered through a whatman filter paper (grade 8) and the filtrate was concentrated under vacuo on a rotary evaporator to obtain the desired aldehyde as a yellow solid (400 mg, 95%). 1H NMR (500 MHz, CDCl3): delta 7.57 (d, J=0.9 Hz, 1H), 7.35-7.46 (m, 1H), 7.25 (dd, J=8.2, 1.8 Hz, 1H), 6.45 (br s, 1H), 4.53 (s, 2H), 4.0 (br s, 1H). 13C NMR (125 MHz, CDCl3): delta 167.6, 150.5, 134.9, 130.6, 125.1, 119.4, 117.7, 64.2. 2-aminobenzo[d]thiazole-6-carbaldehyde: 1H NMR (500 MHz, CDCl3): delta 9.81 (s, 1H), 8.01 (d, J=1.5 Hz, 1H), 7.70 (dd, J=8.2, 1.5 Hz, 1H), 7.42 (d, J=8.5 Hz, 1H), 3.70 (br s, 1H). 13C NMR (125 MHz, CDCl3): delta 191.3, 164.5, 157.1, 130.3, 128.7, 122.6, 118.0
52% With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 20℃; for 4h; Commercially available ester 1 (1.0g, 4.5mmol) was dissolved in anhydrous THF and the RB flask was cooled to 0C. Then LiAlH4 was added slowly and the flask was stirred at 0C for additional 10min. The flask was then stirred at room temperature for 24h. The reaction was then cooled, quenched with methanol, NH4Cl Rochelle's salt and diluted with ethyl acetate (10ml). The organic layer was separated and the aqueous layer was extracted with additional ethyl acetate (3×10ml). The organic layers were combined, dried over Na2SO4 and concentrated under vacuo on a rotary evaporator to obtain a yellow solid. The crude product was purified via gradient silica gel column chromatography using a mixture of CH2Cl2 and methanol (100:1 to 5:1) to obtain the desired alcohol as yellow solid 2 (420mg, 52%). (0009) 1H NMR (500MHz, CDCl3): delta 7.57 (d, J=0.9Hz, 1H), 7.35-7.46 (m, 1H), 7.25 (dd, J=8.2, 1.8Hz, 1H), 6.45 (br s, 1H), 4.53 (s, 2H), 4.0 (br s, 1H). (0010) 13C NMR (125MHz, CDCl3): delta 167.6, 150.5, 134.9, 130.6, 125.1, 119.4, 117.7, 64.2,.
46% EXAMPLE l; 6-(4-(4-fluorophenyI)oxazol-5-yl)-N-(2-morpholinoethyl)benzo[d]thiazoI-2-amine; 1. (2-aminobenzo[d]thiazol-6-yl)methanoI[00149]; To a solution of ethyl 2-aminobenzo[d]thiazole-6-carboxylate (5.05 g, 22.7 mmol, 1.0 eq.) in THF (60 mL) under nitrogen at 00C was added LAH (IM, THF; 100 mL, 100 mmol, 4.4 eq.) over 20 min. After 6.5 h, ice was added, and the solution was stirred overnight. The precipitate was filtered and rinsed with EtOAc. The filtrate was concentrated in vacuo to give a solid which was triturated with Et2O to give (2- aminobenzo[d]thiazol-6-yl)methanol as a yellow solid (1.90 g, 46% yield).
25.5 g (63%) With sodium chloride; diisobutylaluminium hydride; In tetrahydrofuran; ethanol; water; toluene; (a) 2-Amino-6-hydroxymethylbenzothiazole (1a) 50 g (0.225 mol) of ethyl 2-aminobenzothiazole-6-carboxylate are suspended in 1,000 ml of THF, cooled to -70 C., and 562.5 ml (0.675 mol) of diisobutylaluminum hydride (DIBAL, 20% strength in toluene, 1.2 molar) are slowly added dropwise under nitrogen. The reaction solution is stirred at -70 C. to -40 C. overnight and then without cooling for a further 3 hours. Then it is cooled to -70 C., 61.5 ml of water are added dropwise (vigorous exothermic reaction), and the mixture is allowed to reach room temperature. 305 ml of saturated sodium chloride solution are added, and the mixture is stirred at 20 C. for 1 hour. Precipitated aluminum hydroxide is filtered off with suction and washed with THF, and the filtrate is evaporated to dryness (36 g). The residue is dissolved in boiling ethanol, some insolubles are filtered off, and the filtrate is evaporated to dryness. Yield: 25.5 g (63%).

  • 2
  • [ 106429-07-6 ]
  • [ 106429-08-7 ]
YieldReaction ConditionsOperation in experiment
95% With manganese(IV) oxide; In methanol; dichloromethane; at 20℃; for 72h; The ester (1.0 g, 4.5 mmol) was dissolved in anhydrous THF and the RB flask was cooled to 0 C. Then LiAlH4 was added slowly and the flask was stirred at 0 C. for additional 10 min. The flask was then stirred at room temperature for 24 h. The reaction was then cooled, quenched with methanol, NH4Cl Rochelle's salt and diluted with ethyl acetate (10 mL). The organic layer was separated and the aqueous layer was extracted with additional ethyl acetate (3×10 mL). The organic layers were combined, dried over Na2SO4 and concentrated under vacuo on a rotary evaporator to obtain a yellow solid. The crude product was purified via gradient silica gel column chromatography using a mixture of CH2Cl2 and methanol (100:1 to 5:1) to obtain the desired alcohol as yellow solid (420 mg, 52%). The alcohol (420 mg, 2.33 mmol) was dissolved in a mixture of CH2Cl2 and methanol (5:1) and MnO2 (81 mg, 9.32 mmol). The mixture was then stirred at room temperature for 48 h following which additional amount of MnO2 (40 mg) was added after TLC showed incompletion of the reaction. The mixture was stirred for additional 24 h and then filtered through a whatman filter paper (grade 8) and the filtrate was concentrated under vacuo on a rotary evaporator to obtain the desired aldehyde as a yellow solid (400 mg, 95%). 1H NMR (500 MHz, CDCl3): delta 7.57 (d, J=0.9 Hz, 1H), 7.35-7.46 (m, 1H), 7.25 (dd, J=8.2, 1.8 Hz, 1H), 6.45 (br s, 1H), 4.53 (s, 2H), 4.0 (br s, 1H). 13C NMR (125 MHz, CDCl3): delta 167.6, 150.5, 134.9, 130.6, 125.1, 119.4, 117.7, 64.2. 2-aminobenzo[d]thiazole-6-carbaldehyde: 1H NMR (500 MHz, CDCl3): delta 9.81 (s, 1H), 8.01 (d, J=1.5 Hz, 1H), 7.70 (dd, J=8.2, 1.5 Hz, 1H), 7.42 (d, J=8.5 Hz, 1H), 3.70 (br s, 1H). 13C NMR (125 MHz, CDCl3): delta 191.3, 164.5, 157.1, 130.3, 128.7, 122.6, 118.0
95% With manganese(IV) oxide; In dichloromethane; at 20℃; for 72h; The alcohol 2 (420mg, 2.33mmol) was dissolved in a mixture of CH2Cl2 and methanol (5:1) and MnO2 (81mg, 9.32mmol). The mixture was then stirred at room temperature for 48h following which additional amount of MnO2 (40mg) was added after TLC showed incompletion of the reaction. The mixture was stirred for additional 24h and then filtered through a whatman filter paper (grade 8) and the filtrate was concentrated under vacuo on a rotary evaporator to obtain the desired aldehyde as a yellow solid 3 (400mg, 95%). (0012) 1H NMR (500MHz, CDCl3): delta 9.81 (s,1H), 8.01 (d, J=1.5Hz, 1H), 7.70 (dd, J=8.2, 1.5Hz, 1H), 7.42 (d, J=8.5Hz, 1H), 3.70 (br s, 1H). (0013) 13C NMR (125MHz, CDCl3): delta 191.3, 164.5, 157.1, 130.3, 128.7, 122.6, 118.0.
87% With manganese(IV) oxide; In tetrahydrofuran; 2. 2-aminobenzo[d]thiazole-6-carbaIdehyde[00150]; To a solution of <strong>[106429-07-6](2-aminobenzo[d]thiazol-6-yl)methanol</strong> (1.90 g, 10.5 mmol, 1.0 eq.) in THF (75 mL) under nitrogen was added MnO2 (14 g, 161 mmol, 15.3 eq.). After stirring overnight, the reaction solution was filtered through Celite and rinsed with. THF. The filtrate was concentrated in vacuo to give 2- aminobenzo[d]thiazole-6-carbaldehyde as a yellow solid (1.64 g, 87% yield).
74 g (68%) In tetrahydrofuran; (b) 2-Aminobenzothiazole-6-carboxaldehyde (1b) 110.5 g (0.613 mol) of 1a are stirred in 200 ml of THF with 319.8 g (3.678 mol) of manganese (IV) oxide at room temperature for 3 days. The reaction mixture is filtered, the residue on the filter is washed with THF, and the filtrate is evaporated in vacuo. Yield: 74 g (68%). C8 H6 N2 OS (178.1). NMR (DMSO): delta=7.48 (d, J=7.5 Hz, 1H), 7.8 (d, J=7.5 Hz, 1H), 8.08 (s, 2H), 8.26 (s, 1H), 9.92 (s, 1H) ppm.

  • 3
  • [ 106429-07-6 ]
  • [ 874-60-2 ]
  • [ 1428621-69-5 ]
YieldReaction ConditionsOperation in experiment
55% With dmap; triethylamine; In tetrahydrofuran; at 80℃; for 4h; [1071] Step 3: N-(6-(hydroxymethyl)benzo[d]thiazol-2(3H)-ylidene)-4-methylbenzamide [1072] To a solution of <strong>[106429-07-6](2-aminobenzo[d]thiazol-6-yl)methanol</strong> (5.34 g, 29.63 mmol) in tetrahydrofuran (300 mL), were added triethylamine (6.16 mL, 44.45 mmol), 4,4-dimethylaminopyridine (362 mg, 2.963 mmol), and p-toluoyl chloride (5.48 mL, 41.48 mmol). The reaction mixture was stirred at 80 ? for 4 hours. A 3N sodium hydroxide solution (20 mL) was added to the reaction mixture, which was then stirred at room temperature overnight. The reaction mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and then evaporated. Isopropyl ether was added to the resulting residue and then filtered. The resulting solid was dried under reduced pressure to give 4.84 g of the titled compound as a white solid (Yield: 55%).[1073] 1H NMR (DMSO-d6, 400 MHz); 8.02 (d, 2H), 7.89 (s, 1H), 7.71 (d, 1H), 7.36 (m, 3H), 5.34 (brs, 1H), 4.59 (s, 2H), 2.50 (s, 1H), 2.38 (s, 3H)
55% With dmap; triethylamine; In tetrahydrofuran; at 80℃; for 4h; Step 3: N-(6-(hydroxymethyl)benzo[d]thiazol-2(3H)-ylidene)-4-methylbenzamide To a solution of <strong>[106429-07-6](2-aminobenzo[d]thiazol-6-yl)methanol</strong> (5.34 g, 29.63 mmol) in tetrahydrofuran (300 mL), were added triethylamine (6.16 mL, 44.45 mmol), 4,4-dimethylaminopyridine (362 mg, 2.963 mmol), and p-toluoyl chloride (5.48 mL, 41.48 mmol). The reaction mixture was stirred at 80 C. for 4 hours. A 3N sodium hydroxide solution (20 mL) was added to the reaction mixture, which was then stirred at room temperature overnight. The reaction mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and then evaporated. Isopropyl ether was added to the resulting residue and then filtered. The resulting solid was dried under reduced pressure to give 4.84 g of the titled compound as a white solid (Yield: 55%). 1H NMR (DMSO-d6, 400 MHz); 8.02 (d, 2H), 7.89 (s, 1H), 7.71 (d, 1H), 7.36 (m, 3H), 5.34 (brs, 1H), 4.59 (s, 2H), 2.50 (s, 1H), 2.38 (s, 3H)
  • 4
  • [ 94-09-7 ]
  • [ 106429-07-6 ]
  • 5
  • [ 106429-07-6 ]
  • [ 1428621-70-8 ]
  • 6
  • [ 106429-07-6 ]
  • [ 1428621-68-4 ]
  • 7
  • [ 106429-07-6 ]
  • (2S,4R,5R)-5-(((2-aminobenzo[d]thiazol-6-yl)methyl)amino)-2-(bis(4-fluorophenyl)methyl)tetrahydro-2H-pyran-4-ol [ No CAS ]
  • 8
  • [ 106429-07-6 ]
  • (2S,4R,5R)-5-(((2-aminobenzo[d]thiazol-6-yl)methyl)amino)-2-(bis(4-fluorophenyl)methyl)tetrahydro-2H-pyran-4-ol trihydrochloride [ No CAS ]
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