Water → Benzyl 4-(3-hydroxypropyl)piperidine-1-carboxylate

Participants

Reaction Steps

To a stirred mixture of methylene chloride (400 ml) and water (40 ml) are added dropwise benzyloxycarbonyl chloride (100 g) and a solution of 3-(4-piperidyl)propanol (84 g) and triethylamine (65 g) in methylene chloride (100 ml) for 45 minutes at room temperature. After addition is completed, stirring is continued for further 1 hour. The methylene chloride layer is separated, washed with water, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. Vacuum distillation of the oily residue is carried out to remove the low boiling material (50°-60° C./5 mmHg). 3-(1-Benzyloxycarbonyl-4-piperidyl)propanol (110 g) is obtained as a yellow oily residue.

Provenance & Evidence