1,3-Dimethyl-6-oxo-2,5-diphenyl-3,6-dihydropyrimidin-1-ium-4-olate 、
3-amino-5,6,7,8-tetraphenylnaphthalene-2-carboxylic acid 在
亚硝酸异戊酯 作用下,
以
1,2-二氯乙烷 为溶剂,
以65%的产率得到1,4-dihydro-1,4,6,7,8,9-hexaphenyl-2,11-dimethyl-1,4-(iminomethano)benz(g)isoquinoline-3,12-dione