反应详情

The mixture of 3-methylpiperidine-4-carboxylic acid hydrochloride (3.3 g, 18.4 mmol, 1.0 eq) and SOCl2 (6.6 g, 55.3 mmol, 3.0 equiv) in EtOH (30 mL) was stirred at reflux for 3 h, and then the reaction mixture was concentrated by vacuum to give compound ethyl 3-methylpiperidine-4-carboxylate hydrochloride as a yellow oil which was used for next step. ESI-MS (M+H)+: 172.2.

1. temperatureat reflux for 3 h
2. concentrationthe reaction mixture was concentrated by vacuum