2-(3-氯苯基)-2-羟基乙腈

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred suspension of LAH (2.36 g, 59 mmol) in dry THF (70 mL) was added a solution of (3-chloro-phenyl)-hydroxy-acetonitrile (4.0 g, 24 mmol) in dry THF (55 mL) dropwise at 0° C. under nitrogen atmosphere. The mixture was warmed to 25° C. and then heated at 60° C. for 2 hours. After cooling to 0° C., a saturated solution of sodium hydroxide was added dropwise and extracted with dichloromethane (200 mL). The organic solution was dried over anhydrous sodium sulfate and concentrated to dryness. The residue was purified by column chromatography (methanol:dichloromethane, 1:10) to afford 2-amino-1-(3-chloro-phenyl)-ethanol. (Yield 2.86 g, 70%). heated at 60° C. for 2 hours After cooling to 0° C. extracted with dichloromethane (200 mL) The organic solution was dried over anhydrous sodium sulfate concentrated to dryness The residue was purified by column chromatography (methanol:dichloromethane, 1:10)

反应条件: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred suspension of potassium cyanide (5.04 g, 78 mmol) in methanol (20 mL) was added 3-chlorobenzaldehyde (7.0 g, 50 mmol) at 0° C. under nitrogen atmosphere. Then acetic acid (4.4 mL) was added dropwise at 0° C. After 30 minutes, the mixture was warmed to 15° C. and stirred for 5 hours. Then the reaction mixture was concentrated to dryness and extracted with ethyl acetate (200 mL). The organic solution was washed with water (3×25 mL), brine (25 mL), dried over anhydrous sodium sulfate and concentrated to dryness. The resulting residue was purified by column chromatography (ethyl acetate:petroleum ether, 1:15) to afford (3-chloro-phenyl)-hydroxy-acetonitrile. (Yield 8.2 g, 97%). Then the reaction mixture was concentrated to dryness extracted with ethyl acetate (200 mL) The organic solution was washed with water (3×25 mL), brine (25 mL) dried over anhydrous sodium sulfate concentrated to dryness The resulting residue was purified by column chromatography (ethyl acetate:petroleum ether, 1:15)

反应条件: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred suspension of LAH (2.36 g, 59 mmol) in dry THF (70 mL) was added a solution of (3-chloro-phenyl)-hydroxy-acetonitrile (4.0 g, 24 mmol) in dry THF (55 mL) dropwise at 0° C. under nitrogen atmosphere. The mixture was warmed to 25° C. and then heated at 60° C. for 2 hours. After cooling to 0° C., a saturated solution of sodium hydroxide was added dropwise and extracted with dichloromethane (200 mL). The organic solution was dried over anhydrous sodium sulfate and concentrated to dryness. The residue was purified by column chromatography (methanol:dichloromethane, 1:10) to afford 2-amino-1-(3-chloro-phenyl)-ethanol. (Yield 2.86 g, 70%). LC-MS: [M+H]+ 172. heated at 60° C. for 2 hours After cooling to 0° C. extracted with dichloromethane (200 mL) The organic solution was dried over anhydrous sodium sulfate concentrated to dryness The residue was purified by column chromatography (methanol:dichloromethane, 1:10)

反应条件: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred suspension of KCN (5.04 g, 78 mmol) in methanol (20 mL) was added 3-chlorobenzaldehyde (7.0 g, 50 mmol) at 0° C. under nitrogen atmosphere. Then acetic acid (4.4 mL) was added dropwise at 0° C. After 30 minutes, the mixture was warmed to 15° C. and stirred for 5 hours. Then the reaction mixture was concentrated to dryness and extracted with ethyl acetate (200 mL). The organic solution was washed with water (3×25 mL), brine (25 mL), dried over anhydrous sodium sulfate and concentrated to dryness. The resulting residue was purified by column chromatography (ethyl acetate:petroleum ether, 1:15) to afford (3-chloro-phenyl)-hydroxy-acetonitrile. (Yield 8.2 g, 97%). LC-MS: [M+Na]+ 190. Then the reaction mixture was concentrated to dryness extracted with ethyl acetate (200 mL) The organic solution was washed with water (3×25 mL), brine (25 mL) dried over anhydrous sodium sulfate concentrated to dryness The resulting residue was purified by column chromatography (ethyl acetate:petroleum ether, 1:15)