4-溴-3-氯-2-氟乙酰苯胺

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of N-(4-bromo-3-chloro-2-fluorophenyl)acetamide (17.0 g) and copper(I) cyanide (5.88 g) in N,N-dimethylformamide was stirred at 150° C. overnight. After warming to room temperature, water was added, and the mixture was extracted with methyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure to give N-(3-chloro-4-cyano-2-fluorophenyl)acetamide. Ethanol (250 mL)-concentrated hydrogen chloride (26.6 mL) was added to N-(3-chloro-4-cyano-2-fluorophenyl)acetamide, and the mixture was refluxed overnight. The mixture was ice-cooled, and neutralized with saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by column, and the obtained solid was washed with hexane to give the title compound as a pale-yellow solid (yield: 7.0 g, 64%). After warming to room temperature the mixture was extracted with methyl acetate The organic layer was washed with saturated brine dried over magnesium sulfate the solvent was evaporated under reduced pressure

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

实验步骤: To a solution of 4-bromo-3-chloro-2-fluoroaniline (15.0 g) in ethyl acetate (200 mL) was added dropwise acetic anhydride (7.57 mL) at 0° C. Then, pyridine (10.8 mL) was added dropwise, and the mixture was stirred at room temperature overnight. The mixture was diluted with ethyl acetate, washed with water and saturated brine, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained solid was washed with hexane to give the title compound as a colorless solid (yield: 17.1 g, 96%). washed with water and saturated brine dried over magnesium sulfate The solvent was evaporated under reduced pressure The obtained solid was washed with hexane

反应条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of N-(4-bromo-3-chloro-2-fluorophenyl)acetamide (17.0 g) and copper(I) cyanide (5.88 g) in N,N-dimethylformamide was stirred at 150° C. overnight. After warming to room temperature, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure to give N-(3-chloro-4-cyano-2-fluorophenyl)acetamide. Ethanol (250 ml)-concentrated hydrogen chloride (26.6 mL) was added to N-(3-chloro-4-cyano-2-fluorophenyl)acetamide, and the mixture was refluxed overnight. The mixture was ice-cooled, and neutralized with saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by column, and the obtained solid was washed with hexane to give the title compound as a pale-yellow solid (yield: 7.0 g, 64%). After warming to room temperature the mixture was extracted with ethyl acetate The organic layer was washed with saturated brine dried over magnesium sulfate the solvent was evaporated under reduced pressure

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

实验步骤: To a solution of 4-bromo-3-chloro-2-fluoroaniline (15.0 g) in ethyl acetate (200 mL) was added dropwise acetic anhydride (7.57 mL) at 0° C. Then, pyridine (10.8 mL) was added dropwise, and the mixture was stirred at room temperature overnight. The mixture was diluted with ethyl acetate, washed with water and saturated brine, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained solid was washed with hexane to give the title compound as a colorless solid (yield: 17.1 g, 96%). washed with water and saturated brine dried over magnesium sulfate The solvent was evaporated under reduced pressure The obtained solid was washed with hexane