ethyl 3-anilino-3-(methylthio)acrylonitrile-2-carboxylate 、
(4Z)-4-[(4-nitrophenyl)methylidene]-1-phenylpyrazolidine-3,5-dione 以
1,4-二氧六环 为溶剂,
反应 20.0h,
以55%的产率得到ethyl (2Z)-2-cyano-2-[4-(4-nitrophenyl)-3-oxo-1,5-diphenyl-2,4-dihydropyrazolo[4,3-e][1,3]oxazin-6-ylidene]acetate