ethyl 2-(4-chloro-3-nitrophenyl)-4-methylthiazole-5-carboxylate 、 Ethyl 4-methyl-2-(4-(4-methylpiperazinyl)-3-nitrophenyl)-5-thiazolecarboxylate 以
N-甲基哌嗪 为溶剂,
以to give 4-methyl-2-(4-(4-methylpiperazinyl)-3-nitrophenyl)-5-thiazolecarboxylic acid (yield: 58%)的产率得到4-methyl-2-(4-(4-methylpiperazinyl)-3-nitrophenyl)-5-thiazolecarboxylic acid