苯肼 、 2-{[4-(4-Ethyl-5-thioxo-4,5-dihydro-1H-[1,2,4]triazol-3-yl)-phenyl]-hydrazono}-3-oxo-butyric acid ethyl ester 以
溶剂黄146 为溶剂,
以55%的产率得到4-{[4-(4-Ethyl-5-thioxo-4,5-dihydro-1H-[1,2,4]triazol-3-yl)-phenyl]-hydrazono}-5-methyl-2-phenyl-2,4-dihydro-pyrazol-3-one