2-[1-(4-Hydroxy-phenyl)-meth-(E)-ylidene]-1,1-dioxo-1,2-dihydro-1λ6-benzo[b]thiophen-3-one 、
3-氨基巴豆酸乙酯 以
溶剂黄146 为溶剂,
反应 0.5h,
以54%的产率得到4-(4-Hydroxy-phenyl)-2-methyl-5,5-dioxo-4,5-dihydro-1H-5λ
6-benzo[4,5]thieno[3,2-b]pyridine-3-carboxylic acid ethyl ester