5-bromo-1-phenylpentan-1-one

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

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

Procedure: Potassium carbonate (0.57 g) and 5-bromo-1-phenyl-1-pentanone (0.80 g) were added to a solution (45 ml) of 4-amino-5-chloro-2-methoxy-N-(piperidin-4-ylmethyl)benzamide dihydrochloride (1.5 g) in dimethylformamide, and the mixture was stirred at 70°-80° C. for 7.5 hr. Water was added to the reaction mixture, and the mixture was extracted with chloroform. The organic layer was washed with saturated aqueous sodium chloride solution, dried and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give crystals. The obtained crystals were recrystallized from ethyl acetate to give 0.80 g of 4-amino-5-chloro-2-methoxy-N-((1-(5-oxo-5-phenylpentyl)piperidin-4-yl)methyl)benzamide. the mixture was extracted with chloroform The organic layer was washed with saturated aqueous sodium chloride solution dried the solvent was evaporated under reduced pressure The obtained residue was purified by silica gel column chromatography to give crystals The obtained crystals were recrystallized from ethyl acetate

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

Procedure: 17.0 g of 1-benzoyl-4-bromobutane, 13.4 g of 1-(ethoxycarbonylamino)piperazine and 17.8 g of sodium hydrogen carbonate were heated under reflux in ethanol for 6 hours with stirring. The insoluble materials were removed from the reaction mixture by filtration. The solvent was distilled off, and water was added to the residue. The mixture was extracted with benzene. The extract was recrystallized from benzene-hexane to give 21.4 g of 4-(4-benzoylbutyl)-1-(ethoxycarbonylamino)-piperazine having a melting point of 105° to 106° C. The insoluble materials were removed from the reaction mixture by filtration The solvent was distilled off water was added to the residue The mixture was extracted with benzene The extract was recrystallized from benzene-hexane

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

Procedure: 17.0 g of 1-benzoyl-4-bromobutane, 13.4 g of 1-(ethoxycarbonylamino)piperazine and 17.8 g of sodium hydrogen carbonate were heated under reflux in ethanol for 6 hours with stirring. The insoluble materials were removed from the reaction mixture by filtration. The solvent was distilled off, and water was added to the residue. The mixture was extracted with benzene. The extract was recrystallized from benzene-hexane to give 21.4 g of 4-(4-benzoylbutyl)-1-(ethoxycarbonylamino)-piperazine having a melting point of 105° to 106° C. The insoluble materials were removed from the reaction mixture by filtration The solvent was distilled off water was added to the residue The mixture was extracted with benzene The extract was recrystallized from benzene-hexane

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

Procedure: Potassium carbonate (0.57 g) and 5-bromo-1-phenyl-1-pentanone (0.80 g) were added to a solution (45 ml) of 4-amino-5-chloro-2-methoxy-N-(piperidin-4-ylmethyl)benzamide dihydrochloride (1.5 g) in dimethylformamide, and the mixture was stirred at 70°-80° C. for 7.5 hr. Water was added to the reaction mixture, and the mixture was extracted with chloroform. The organic layer was washed with saturated aqueous sodium chloride solution, dried and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give crystals. The obtained crystals were recrystallized from ethyl acetate to give 0.80 g of 4-amino-5-chloro-2-methoxy-N-((1-(5-oxo-5-phenylpentyl)piperidin-4-yl)methyl)benzamide. the mixture was extracted with chloroform The organic layer was washed with saturated aqueous sodium chloride solution dried the solvent was evaporated under reduced pressure The obtained residue was purified by silica gel column chromatography to give crystals The obtained crystals were recrystallized from ethyl acetate

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

Procedure: Potassium carbonate (0.57 g) and 5-bromo-1-phenyl-1-pentanone (0.80 g) were added to a solution (45 ml) of 4-amino-5-chloro-2-methoxy-N-(piperidin-4-ylmethyl)benzamide dihydrochloride (1.5 g) in dimethylformamide, and the mixture was stirred at 70°-80° C. for 7.5 hr. Water was added to the reaction mixture, and the mixture was extracted with chloroform. The organic layer was washed with saturated aqueous sodium chloride solution, dried and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give crystals. The obtained crystals were recrystallized from ethyl acetate to give 0.80 g of 4-amino-5-chloro-2-methoxy-N-((1-(5-oxo-5-phenylpentyl)piperidin-4-yl)methyl)benzamide. the mixture was extracted with chloroform The organic layer was washed with saturated aqueous sodium chloride solution dried the solvent was evaporated under reduced pressure The obtained residue was purified by silica gel column chromatography to give crystals The obtained crystals were recrystallized from ethyl acetate

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

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

Procedure: 29.2 g of 5-bromovalerophenone and 23 g of 1-(ethoxycarbonylamino)piperazine were dissolved in 250 ml of ethanol. 30.5 g of sodium hydrogen carbonate was added, and the mixture was heated under reflux for 6 hours. Ethanol was evaporated from the reaction mixture. After addition of water, the residue was extracted with benzene. The extract was recrystallized from benzene-hexane to give 36.2 g of the title compound having a melting point of 105° to 106° C. the mixture was heated under reflux for 6 hours Ethanol was evaporated from the reaction mixture After addition of water the residue was extracted with benzene The extract was recrystallized from benzene-hexane

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

Procedure: 17.0 g of 1-benzoyl-4-bromobutane, 13.4 g of 1-(ethoxycarbonylamino)piperazine and 17.8 g of sodium hydrogen carbonate were heated under reflux in ethanol for 6 hours with stirring. The insoluble materials were removed from the reaction mixture by filtration. The solvent was distilled off, and water was added to the residue. The mixture was extracted with benzene. The extract was recrystallized from benzene-hexane to give 21.4 g of 4-(4-benzoylbutyl)-1-(ethoxycarbonylamino)-piperazine having a melting point of 105° to 106° C. The insoluble materials were removed from the reaction mixture by filtration The solvent was distilled off water was added to the residue The mixture was extracted with benzene The extract was recrystallized from benzene-hexane

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

Procedure: Potassium carbonate (0.57 g) and 5-bromo-1-phenyl-1-pentanone (0.80 g) were added to a solution (45 ml) of 4-amino-5-chloro-2-methoxy-N-(piperidin-4-ylmethyl)benzamide dihydrochloride (1.5 g) in dimethylformamide, and the mixture was stirred at 70°-80° C. for 7.5 hr. Water was added to the reaction mixture, and the mixture was extracted with chloroform. The organic layer was washed with saturated aqueous sodium chloride solution, dried and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give crystals. The obtained crystals were recrystallized from ethyl acetate to give 0.80 g of 4-amino-5-chloro-2-methoxy-N-((1-(5-oxo-5-phenylpentyl)piperidin-4-yl)methyl)benzamide. the mixture was extracted with chloroform The organic layer was washed with saturated aqueous sodium chloride solution dried the solvent was evaporated under reduced pressure The obtained residue was purified by silica gel column chromatography to give crystals The obtained crystals were recrystallized from ethyl acetate