New Multicomponent Approach for the Creation of Chiral Quaternary Centers in the Carbonyl Allylation Reactions
作者:Genia Sklute、Ilan Marek
DOI:10.1021/ja060498q
日期:2006.4.1
combined regio- and stereo-controlled carbometalation reaction of alkynyl sulfoxide followed by a zinc homologation and finally an allylation reaction led, in a single-pot operation, to chiral homoallylic alcohols in excellent yields and diastereoselectivities for the creation of chiral quaternary and tertiary centers. The key features in all of the reactions that are described in this article are the high
炔基亚砜的区域和立体控制的结合碳金属化反应,然后是锌同系化,最后是烯丙基化反应,在单锅操作中,以优异的收率和非对映选择性获得手性高烯丙醇,用于创建手性季和叔中心. 本文中描述的所有反应的关键特征是高度立体控制、可预测水平和“易于执行”,这确保了此类方法的成功应用。手性亚磺酰基部分可以通过用烷基锂进行简单处理而最终去除,这允许碳骨架的进一步功能化。通过使用这些方法之一,创建具有最小可能差异的手性四元中心,