1-(4-bromophenyl)-4-chlorobutan-1-one

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a solution of 1-(4-bromophenyl)-4-chlorobutan-1-one (1.00 g, 3.83 mmol) in methanol (20 mL) was added sodium borohydride (260 mg, 7.66 mmol) at 0° C. The mixture was stirred at 0° C. for 1 hour. 1M HCl was added and the mixture was stirred for 15 minutes. Solvents were removed and the residue was extracted with ethyl acetate (10 mL×2). The combined organic layer were washed with brine, dried and concentrated to give target compound (1 g, 99%) as a light yellow oil. the mixture was stirred for 15 minutes Solvents were removed the residue was extracted with ethyl acetate (10 mL×2) The combined organic layer were washed with brine dried concentrated

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

Procedure: To a solution of 1-(4-bromophenyl)-4-chlorobutan-1-one (1.00 g, 3.83 mmol) in methanol (20 mL) was added sodium borohydride (260 mg, 7.66 mmol) at 0° C. The mixture was stirred at 0° C. for 1 hour. 1 M HCl was added and the mixture was stirred for 15 minutes. Solvents were removed and the residue was extracted with ethyl acetate (10 mL×2). The combined organic layer were washed with brine, dried and concentrated to give target compound (1 g, 99%) as a light yellow oil. the mixture was stirred for 15 minutes Solvents were removed the residue was extracted with ethyl acetate (10 mL×2) The combined organic layer were washed with brine dried concentrated

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

Procedure: To a solution of 1-(4-bromophenyl)-4-chlorobutan-1-one (1.00 g, 3.83 mmol) in methanol (20 mL) was added sodium borohydride (260 mg, 7.66 mmol) at 0° C. The mixture was stirred at 0° C. for 1 hour. 1 M HCl was added and the mixture was stirred for 15 minutes. Solvents were removed and the residue was extracted with ethyl acetate (10 mL×2). The combined organic layer were washed with brine, dried and concentrated to give target compound (1 g, 99%) as a light yellow oil. the mixture was stirred for 15 minutes Solvents were removed the residue was extracted with ethyl acetate (10 mL×2) The combined organic layer were washed with brine dried concentrated

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

Procedure: 10 g (38.2 mmol) of 4′-bromo-4-chlorobutyrophenone, 4 g (38.2 mmol) of 2,2-dimethyl-1,3-propanediol and 200 mg (1 mmol) of p-toluenesulfonic acid monohydrate were heated under reflex in benzene for 3 days to conduct the azeotropic dehydration. Saturated aqueous sodium hydrogencarbonate solution was added to the reaction mixture. After the extraction with ethyl acetate, the extract was washed with water and saturated aqueous common salt solution and then dried over anhydrous magnesium sulfate. The solvent was evaporated to obtain the title compound. After the extraction with ethyl acetate the extract was washed with water and saturated aqueous common salt solution dried over anhydrous magnesium sulfate The solvent was evaporated

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

Procedure: 10 g (38.2 mmol) of 4′-bromo-4-chlorobutyrophenone, 4 g (38.2 mmol) of 2,2-dimethyl-1,3-propanediol and 200 mg (1 mmol) of p-toluenesulfonic acid monohydrate were heated under reflex in benzene for 3 days to conduct the azeotropic dehydration. Saturated aqueous sodium hydrogencarbonate solution was added to the reaction mixture. After the extraction with ethyl acetate, the extract was washed with water and saturated aqueous common salt solution and then dried over anhydrous magnesium sulfate. The solvent was evaporated to obtain the title compound. After the extraction with ethyl acetate the extract was washed with water and saturated aqueous common salt solution dried over anhydrous magnesium sulfate The solvent was evaporated

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

Procedure: 4-Chloro-4'-bromobutyrophenone (2.61 g.), 4-benzamidopiperidine (2.04 g.) and anhydrous potassium carbonate (1.38 g.) were reacted together in the manner of Example 68 to give the title compound (3.34 g.) as the hydrochloride, colourless microcrystals, m.p. 268.0° .

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

Procedure: 4-Chloro-4'-bromobutyrophenone (2.61 g.), 4-benzamidopiperidine (2.04 g.) and anhydrous potassium carbonate (1.38 g.) were reacted together in the manner of Example 68 to give the title compound (3.34 g.) as the hydrochloride, colourless microcrystals, m.p. 268.0° .

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

Procedure: To a solution of 1-(4-bromophenyl)-4-chlorobutan-1-one (1.00 g, 3.83 mmol) in methanol (20 mL) was added sodium borohydride (260 mg, 7.66 mmol) at 0° C. The mixture was stirred at 0° C. for 1 hour. 1M HCl was added and the mixture was stirred for 15 minutes. Solvents were removed and the residue was extracted with ethyl acetate (10 mL×2). The combined organic layer were washed with brine, dried and concentrated to give target compound (1 g, 99%) as a light yellow oil. the mixture was stirred for 15 minutes Solvents were removed the residue was extracted with ethyl acetate (10 mL×2) The combined organic layer were washed with brine dried concentrated