(Z)-3-Amino-2-cyano-4-[(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-hydrazono]-pent-2-enedioic acid diethyl ester 在
盐酸 作用下,
以
溶剂黄146 为溶剂,
反应 4.0h,
以84%的产率得到4-Amino-5-cyano-1-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-6-oxo-1,6-dihydro-pyridazine-3-carboxylic acid ethyl ester