2-chloro-1-[(2R)-4-[(4-fluorophenyl)methyl]-2-methylpiperazin-1-yl]ethanone

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-chloro-1-[4-(4-fluoro-benzyl)-(2R)-2-methyl-piperazin-1-yl]-ethanone (0.40 g, 1.4 mmol) in 2-butanone (14 mL) was added 4-chloro-2-nitro-phenol (0.25 g, 1.4 mmol), potassium carbonate (0.39 g, 2.8 mmol) and potassium iodide (233 mg, 1.4 mmol). The reaction was refluxed overnight, cooled and concentrated in vacuo. Chromatography on silica gel gave the title compound (0.56 g). The reaction was refluxed overnight cooled concentrated in vacuo

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (3R)-1-(4-fluoro-benzyl)-3-methyl-piperazine (3 g, 14.4 mmol) in dichloromethane (40 mL) was added triethylamine (2.0 mL, 14.4 mmol). The reaction was cooled to 0° C. and chloroacetyl chloride was added (1.1 mL, 14.4 mmol). The reaction was allowed to warm to ambient temperature and stirred for 2 hours. The reaction is diluted with dichloromethane and washed with 10% citric acid. The organic layer was separated, dried over magnesium sulfate, filtered and concentrated in vacuo. Chromatography on silica gel gave the title compound (3.9 g). to warm to ambient temperature washed with 10% citric acid The organic layer was separated dried over magnesium sulfate filtered concentrated in vacuo

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-chloro-1-[4-(4-fluoro-benzyl)-(2R)-2-methyl-piperazin-1-yl]-ethanone (0.40 g, 1.4 mmol) in 2-butanone (14 mL) was added 4-chloro-2-nitro-phenol (0.25 g, 1.4 mmol), potassium carbonate (0.39 g, 2.8 mmol) and potassium iodide (233 mg, 1.4 mmol). The reaction was refluxed overnight, cooled and concentrated in vacuo. Chromatography on silica gel gave the title compound (0.56 g). The reaction was refluxed overnight cooled concentrated in vacuo

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (3R)-1-(4-fluoro-benzyl)-3-methyl-piperazine (3 g, 14.4 mmol) in dichloromethane (40 mL) was added triethylamine (2.0 mL, 14.4 mmol). The reaction was cooled to 0° C. and chloroacetyl chloride was added (1.1 mL, 14.4 mmol). The reaction was allowed to warm to ambient temperature and stirred for 2 hours. The reaction is diluted with dichloromethane and washed with 10% citric acid. The organic layer was separated, dried over magnesium sulfate, filtered and concentrated in vacuo. Chromatography on silica gel gave the title compound (3.9 g). to warm to ambient temperature washed with 10% citric acid The organic layer was separated dried over magnesium sulfate filtered concentrated in vacuo

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-chloro-1-[4-(4-fluoro-benzyl)-(2R)-2-methyl-piperazin-1-yl]-ethanone (0.40 g, 1.4 mmol) in 2-butanone (14 mL) was added 4-chloro-2-nitro-phenol (0.25 g, 1.4 mmol), potassium carbonate (0.39 g, 2.8 mmol) and potassium iodide (233 mg, 1.4 mmol). The reaction was refluxed overnight, cooled and concentrated in vacuo. Chromatography on silica gel gave the title compound (0.56 g). The reaction was refluxed overnight cooled concentrated in vacuo

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (3R)-1-(4-fluoro-benzyl)-3-methyl-piperazine (3 g, 14.4 mmol) in dichloromethane (40 mL) was added triethylamine (2.0 mL, 14.4 mmol). The reaction was cooled to 0° C. and chloroacetyl chloride was added (1.1 mL, 14.4 mmol). The reaction was allowed to warm to ambient temperature and stirred for 2 hours. The reaction is diluted with dichloromethane and washed with 10% citric acid. The organic layer was separated, dried over magnesium sulfate, filtered and concentrated in vacuo. Chromatography on silica gel gave the title compound (3.9 g). to warm to ambient temperature washed with 10% citric acid The organic layer was separated dried over magnesium sulfate filtered concentrated in vacuo