帕罗西汀杂质N1 (非对映体混合物)

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

实验步骤: Lithium aluminum hydride (1.0 molar solution in tetrahydrofuran, 0.75 ml, 0.75 mmol) was added gradually to a solution of trans-4-(4-fluorophenyl)-3-carboxyethylpiperidin-6-one (0.25 g, 0.836 mmol) in tetrahydrofuran (3 ml) keeping the temperature below 25° C. The reaction mixture was stirred for 1 hour at 25° C.; then quenched with 1 drop of water, followed by 2 drops 15% sodium hydroxide solution, and finally with 5 drops of water. Extraction with dichloromethane (35 ml) followed by exaporation of the dichloromethane phase gave 0.21 g of the title compound. Yield 76%. the temperature below 25° C then quenched with 1 drop of water Extraction with dichloromethane (35 ml)

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

实验步骤: Lithium aluminum hydride (1.0 molar solution in tetrahydrofuran, 0.75 ml, 0.75 mmol) was added gradually to a solution of trans-4-(4-fluorophenyl)-3-carboxyethylpiperidin-6-one (0.25 g, 0.836 mmol) in tetrahydrofuran (3 ml) keeping the temperature below 25° C. The reaction mixture was stirred for 1 hour at 25° C.; then quenched with 1 drop of water, followed by 2 drops 15% sodium hydroxide solution, and finally with 5 drops of water. Extraction with dichloromethane (35 ml) followed by exaporation of the dichloromethane phase gave 0.21 g of the title compound. Yield 76%. the temperature below 25° C then quenched with 1 drop of water Extraction with dichloromethane (35 ml)

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

实验步骤: Lithium aluminum hydride (1.0 molar solution in tetrahydrofuran, 0.75 ml, 0.75 mmol) was added gradually to a solution of trans-4-(4-fluorophenyl)-3-carboxyethylpiperidin-6-one (0.25 g, 0.836 mmol) in tetrahydrofuran (3 ml) keeping the temperature below 25° C. The reaction mixture was stirred for 1 hour at 25° C.; then quenched with 1 drop of water, followed by 2 drops 15% sodium hydroxide solution, and finally with 5 drops of water. Extraction with dichloromethane (35 ml) followed by exaporation of the dichloromethane phase gave 0.21 g of the title compound. Yield 76%. the temperature below 25° C then quenched with 1 drop of water Extraction with dichloromethane (35 ml)

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

实验步骤: Lithium aluminum hydride (1.0 molar solution in tetrahydrofuran, 0.75 ml, 0.75 mmol) was added gradually to a solution of trans-4-(4-fluorophenyl)-3-carboxyethylpiperidin-6-one (0.25g, 0.836 mmol) in tetrahydrofuran (3 ml) keeping the temperature below 25° C. The reaction mixture was stirred for 1 hour at 25° C., then quenched with 1 drop of water, followed by 2 drops 15% sodium hydroxide solution, and finally with 5 drops of water. Extraction with dichloromethane (35 ml) followed by evaporation of the dichloromethane phase gave 0.21 g of the title compound. Yield 76%. the temperature below 25° C quenched with 1 drop of water Extraction with dichloromethane (35 ml) followed by evaporation of the dichloromethane phase

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

实验步骤: Borane-tetrahydrofuran complex (1.0 molar solution in tetrahydrofuran (10.8 ml, 10.8 mmol) was added over 20 hours in 3 stages (in 3.6 mmol portions) at a rate of 7 ml/hour by means of a syringe pump to a solution of 4-(4-fluorophenyl)-3-carboxyethylpiperidin-6-one (0.53 g, 2 mmol, trans/cis˜1:1) in tetrahydrofuran (3 ml) at 26° C. The reaction mixture was stirred for 1 hour after addition of the last portion of the borane solution. then quenched with 3.5 ml 30% aqueous potassium carbonate solution. The phases were separated and the aqueous phase extracted with diethyl ether (25 ml). The organic phases were combined and evaporated to yield 0.43 g of the title compound. Yield 80%. then quenched with 3.5 ml 30% aqueous potassium carbonate solution The phases were separated the aqueous phase extracted with diethyl ether (25 ml) evaporated