benzyl 3-<2-(ethoxycarbonyl)ethyl>-5-methyl-4-<<2-(trimethylsilyl)ethoxycarbonyl>methyl>pyrrole-2-carboxylate 在
palladium(II) acetate 、 Montmorillonite clay KSF 作用下,
以
二氯甲烷 、
溶剂黄146 为溶剂,
反应 73.5h,
生成 benzyl 4-<2-(ethoxycarbonyl)ethyl>-5'-formyl-3'-<2-(methoxycarbonyl)ethyl>-4'-<(methoxycarbonyl)methyl>-3-<<2-(trimethylsilyl)ethoxycarbonyl>methyl>-2,2'-methylenedipyrrole-5-carboxylate