(2S,3S,4aR,8R,8aS)-methyl 8-(3-formyl-2-iodo-6-methoxyphenoxy)-2,3-dimethoxy-2,3-dimethyl-2,3,4a,5,8,8a-hexahydrobenzo[b][1,4]dioxine-6-carboxylate 在
tris-(dibenzylideneacetone)dipalladium(0) 、
三(邻甲基苯基)磷 作用下,
以
甲苯 为溶剂,
反应 18.0h,
以50%的产率得到(2S,3S,4aR,6aR,11aR,11bR)-methyl 7-formyl-2,3,10-trimethoxy-2,3-dimethyl-2,3,4a,6a,11a,11b-hexahydrobenzo[b][1,4]dioxino[2,3-g]benzofuran-6-carboxylate