An Efficient Protocol for the Enantioselective Preparation of a Key Polyfunctionalized Cyclohexane. New Access to (<i>R</i>)- and (<i>S</i>)-4-Hydroxy-2-cyclohexenone and (<i>R</i>)- and (<i>S</i>)-<i>trans</i>-Cyclohex-2-ene-1,4-diol
作者:Pau Bayón、Georgina Marjanet、Gladis Toribio、Ramon Alibés、Pere de March、Marta Figueredo、Josep Font
DOI:10.1021/jo800107h
日期:2008.5.1
accessible raw materials such as p-methoxyphenol, ethylene glycol, and thiophenol, a protocol has been developed to prepare multigram quantities of the polyfunctionalized cyclohexane (±)-7. A highly efficient resolution of (±)-7 has been achieved through enantioselective acetylation catalyzed by Candida antarctica lipase B. Straightforward and enantioselective syntheses of 4-hydroxy-2-cyclohexenone, 1
从对苯甲氧基苯酚,乙二醇和苯硫酚等非常容易获得的原材料开始,已经开发出了制备多克数量的多官能化环己烷(±)-7的方案。通过南极假丝酵母脂肪酶B催化的对映体选择性乙酰化,实现了(±)-7的高效分离。4-羟基-2-环己烯酮1,反式-环己-2-烯-1,4-的直接和对映选择性合成。二醇2及其受O保护的衍生物18和19可以很容易地由7完成。