4-甲氧基苯肼盐酸盐 、 3-Oxo-2-{[4-(5-thioxo-4,5-dihydro-[1,3,4]oxadiazol-2-yl)-phenyl]-hydrazono}-butyric acid ethyl ester 在
溶剂黄146 作用下,
以58%的产率得到2-(4-Methoxy-phenyl)-5-methyl-4-{[4-(5-thioxo-4,5-dihydro-[1,3,4]oxadiazol-2-yl)-phenyl]-hydrazono}-2,4-dihydro-pyrazol-3-one