乙酸酐 、 5-amino-12-chloro-2,3-dihydro-dibenzo[
b,
f]imidazo[1,2-
d][1,4]thiazepine-7-carboxylic acid methyl ester; monohydrochloride 以
溶剂黄146 为溶剂,
生成
5-acetylamino-12-chloro-2,3-dihydro-dibenzo[b,f]imidazo[1,2-d][1,4]thiazepine-7-carboxylic acid methyl ester