反应详情

A solution of 1-benzyl-piperidine-4-carboxylic acid methylamide (36) (853 mg, 3.67 mmol) in dichloromethane (10 ml) was cooled in an ice-bath and phosphorous pentachloride (841 mg, 4 mmol) was added dropwise. The mixture was stirred at rt for 5 h, cooled to −5° C. and trimethylsilyl azide (387 ul, 3.67 mmol) was added dropwise. The reaction mixture was stirred for 3 h at rt and was then quenched by addition of sat. aqueous NaHCO3 solution. The organic layer was washed with water and brine, dried over Na2 SO4 and evaporated to yield a colorless solid.

1. temperaturecooled to −5° C.
2. stirringThe reaction mixture was stirred for 3 h at rt
3. customwas then quenched by addition of sat. aqueous NaHCO3 solution
4. washThe organic layer was washed with water and brine
5. customdried over Na2 SO4
6. customevaporated
7. customto yield a colorless solid