8-氨基喹啉 、
2,2-二甲基-4,6-二氧环己烷-1-羧酸甲酯 、
对二甲氨基苯甲醛 以51%的产率得到methyl 5-[(2-hydroxy-5-methoxycarbonyl-4,4-dimethyl-6-oxocyclohex-1-enyl)(4-dimethylaminophenyl)methyl]-7-(4-dimethylaminophenyl)-10,10-dimethyl-8-oxo-7,8,9,10,11,12-hexahydro-benzo[b][1,10]phenanthrolin-9-carboxylate