N-(2-Cyano-4,5-dimethoxy-phenyl)-4-(pyrrolidine-1-carbonyl)-piperidine-1-carboximidothioic acid methyl ester 在
ammonium chloride 作用下,
以
formamide 为溶剂,
以85%的产率得到[1-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperidin-4-yl]-pyrrolidin-1-ylmethanone;hydrochloride