1-[4-Hydroxy-1-methyl-5-[4-(trifluoromethyl)phenyl] - 1H-pyrazol-3-yl]ethanone 、
5-hydrazinocarbonylthiophene-2-carboxylic acid diethylamide 在
对甲苯磺酸 作用下,
以
异丙醇 为溶剂,
反应 14.0h,
以53%的产率得到5-{1-[4-hydroxy-1-methyl-5-(4-trifluoromethylphenyl)-1H-pyrazol-3-yl]ethylidenehydrazinocarbonyl}thiophene-2-carboxylic acid diethylamide