Synthesis of an Advanced Intermediate of the Jatrophane Diterpene Pl-4: A Dibromide Coupling Approach
作者:Rita Fürst、Uwe Rinner
DOI:10.1021/jo401480t
日期:2013.9.6
The preparation of an advanced intermediate toward the synthesis of the jatrophanediterpene Pl-4 is described. The key step is a regioselective chelation-controlled lithiation of the (Z)-configured bromide in the corresponding vinyl dibromide precursor. The method outlined within this Article is suitable for the facile access of sterically hindered internal vinyl halides for further coupling reactions
描述了用于合成麻风烷二萜 Pl-4 的高级中间体的制备。关键步骤是在相应的二溴乙烯前体中对( Z )-构型溴化物进行区域选择性螯合控制的锂化。本文概述的方法适用于轻松获取空间位阻的内部卤乙烯以进行进一步的偶联反应。