Bis(2,2,2-trichloroethyl) <(5-acetoxy-4-oxo-4H-pyran-2-yl)carbonyl>-(2-ethenyl-3,4,5-trimethoxybenzyl)propanedioate 在
乙酸酐 作用下,
反应 3.5h,
以61%的产率得到Bis(2,2,2-trichloroethyl) (7aα,11α,12aβ)-9-acetoxy-10,11,12,12a-tetrahydro-1,2,3-trimethoxy-7,10-dioxo-5H-7a,11-epoxybenzo
heptalene-6,6(7H)-dicarboxylate