N,N,2,3-tetramethyl-2',3',7,8-tetrahydrospiro[imidazo[1,2-a]pyrano[2,3-c]pyridine-9,1'-indene]-6-carboxamide 、
顺丁烯二酸 以
丙酮 为溶剂,
以73%的产率得到N,N,2,3-tetramethyl-2',3',7,8-tetrahydrospiro[imidazo[1,2-a]pyrano[2,3-c]pyridine-9,10-indene]-6-carboxamide (2Z)-but-2-enedioate