2-(5-氧代-1-苯基-4H-吡唑-3-基)乙酸甲酯 、
methyl [(Z)-4-dimethylaminomethylidene-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl]acetate 在
盐酸 作用下,
以
乙醇 为溶剂,
反应 12.0h,
以59%的产率得到methyl [{(Z)-4-(3-methoxycarbonylmethyl)-5-oxo-1-phenyl-1,5-dihydro-pyrazol-4-ylidene}methyl-5-hydroxy-1-phenyl-1H-pyrazol-3-yl]acetate