反应详情

温度

50 °C

4-Phenyl-4-cyano-1-benzyl-piperidine (535 g, 1940 mmol) was combined with aqueous sodium hydroxide (85 mL, 50% by weight) and ethanol (5 L) and the mixture was heated to 50° C. The heating was removed, and a solution of hydrogen peroxide (856 mL, 30% by weight in water) was added at such a rate that the temperature of the reaction mixture does not rise above 50° C. The reaction mixture was then stirred at 50° C. for 20 hours. The reaction mixture was diluted with water (3 L) and the ethanol was removed in vacuo at 35° C. Cooling the reaction mixture to ambient temperature gave a solid which was collected by filtration, rinsed with water, and air dried to give 4-phenyl-1-benzyl-piperidine-4-carboxylic acid amide N-oxide.

1. customThe heating was removed
2. additiona solution of hydrogen peroxide (856 mL, 30% by weight in water) was added at such a rate that the temperature of the reaction mixture
3. customdoes not rise above 50° C
4. additionThe reaction mixture was diluted with water (3 L)
5. customthe ethanol was removed in vacuo at 35° C
6. temperatureCooling the reaction mixture to ambient temperature
7. customgave a solid which
8. filtrationwas collected by filtration
9. washrinsed with water, and air
10. customdried