1-{[(Z)-2-Cyano-4,5-dimethoxy-phenylimino]-methylsulfanyl-methyl}-piperidine-4-carboxylic acid 2,2-dimethyl-propyl ester 在
ammonium chloride 作用下,
以
formamide 为溶剂,
以81%的产率得到2,2-Dimethylpropyl 1-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperidine-4-carboxylate;hydrochloride