Highly regioselective intramolecular hydroxymethylation of α,β-unsaturated carboxylic acids
作者:Torsten Linker、Michael Maurer、Frank Rebien
DOI:10.1016/0040-4039(96)01931-4
日期:1996.11
A convenient synthesis of hydroxy esters 7 and lactones 8 by starting from easily available α,β-unsaturated carbocyclic acids 4 is described. The key step of this transformation is a hitherto unknown radical cyclization of silyl esters, which exhibits a high degree of regioselectivity through steric and orbital control.
描述了通过从容易获得的α,β-不饱和碳环酸4开始方便地合成羟基酯7和内酯8的方法。该转变的关键步骤是迄今为止尚未发现的甲硅烷基酯的自由基环化反应,该反应通过空间和轨道控制显示出很高的区域选择性。