Intermolecular Radical Reaction of <i>O</i>,<i>Se</i>-Acetals Generated via Seleno-Pummerer Rearrangement
作者:Daisuke Urabe、Hiroki Yamaguchi、Ayumi Someya、Masayuki Inoue
DOI:10.1021/ol301482f
日期:2012.8.3
A new general protocol for the synthesis of O,Se-acetals using the seleno-Pummerer reaction has been developed, and their radical-based two- and three-component coupling reactions were studied. The three-component coupling employed the O,Se-acetal, cyclopentenone, and an allylstannane derivative, and enabled stereoselective installations of α-acyloxy alkyl and functionalized allyl groups to generate
提出了一种新的利用硒代-Pummerer反应合成O,Se-缩醛的通用方案,并研究了它们基于自由基的两组分和三组分偶联反应。三组分偶联使用O,Se-乙缩醛,环戊烯酮和烯丙基锡烷衍生物,并能够通过一次操作将α-酰氧基烷基和官能化的烯丙基立体选择安装,以生成2,3-反式-二取代的环戊酮。所获得的高度官能化的结构用作十二烷二醇二醇骨架的容易组装的中间体。