dimethyl 4-(4-chlorobenzoyloxy)-4-(4-chlorophenyl)hepta-2,5-diynedioate 、
N,N'-二甲基-1,3-丙二胺 以
二氯甲烷 为溶剂,
以59%的产率得到(Z)-methyl 2-(3-(4-chlorobenzoyl)-9a-(4-chlorophenyl)-4,8-dimethyl-2-oxo-5,6,7,8-tetrahydrofuro[3,2-b][1,5]diazocin-9(2H,4H,9aH)-ylidene)acetate