反应详情

To a solution of benzyl 4-formylpiperidine-1-carboxylate (22.35 g) in toluene (300 mL) was added piperidine (11.55 g). The mixture was stirred at reflux under a Dean-Stark trap overnight. The mixture was then concentrated under vacuum and the residue was used directly in the next step.

1. temperatureat reflux under a Dean-Stark trap overnight
2. concentrationThe mixture was then concentrated under vacuum