4-bromo-2-(4-methyl-4,5-dihydro-1(3)H-imidazol-2-yl)-benzenethiol 、
4-chloro-3-nitro-5-sulfamoyl-benzoic acid methyl ester 在
sodium acetate 作用下,
以
乙醇 为溶剂,
生成 12-bromo-3-methyl-5-sulfamoyl-2,3-dihydro-dibenzo[
b,
f]imidazo[1,2-
d][1,4]thiazepine-7-carboxylic acid methyl ester