Reacción #1172

Ecuación de reacción

4-Hydroxypiperidine

Et3N

benzyl chloroformate

CHCl3 MeOH

→

N-Cbz-piperidine

Rendimiento 59.2%

Disolventes

CH2Cl2

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.ADDITIONwas added

Procedimiento

4-Hydroxypiperidine (10.8 g, 107 mmol) and Et3N (17 mL, 123 mmol) in 80 mL of CH2Cl2 was cooled in an ice bath whereupon benzyl chloroformate (16.3 mL, 114 mmol) was added. After stirring 1.5 h at R.T. the mixture was subjected to standard work-up conditions to give 13.9 g (55%) of N-Cbz-piperidine after chromatography (CHCl3 /MeOH; 10:1). [1H]-NMR(CDCl3) consistent with structure.

Fuente