Formation of α-Lithio Siloles from Silylated 1,4-Dilithio-1,3-Butadienes: Mechanism and Applications
作者:Qian Luo、Chao Wang、Li Gu、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1002/asia.200900287
日期:2010.5.3
A full account of a useful transformation from silylated 1,4‐dilithio‐1,3‐butadienes to α‐lithio siloles is described. These lithio siloles formed by this procedure are general, in terms of substitution patterns and synthetic methods, affording diversified silole derivatives. Notably, some structurally complex molecules, such as bridged bis‐silole compounds, have been synthesized easily and successfully
描述了从甲硅烷基化的1,4-二硫代-1,3-丁二烯向α-硫代甲硅烷的有用转变的完整说明。就取代方式和合成方法而言,通过该方法形成的这些硫代甲硅烷基是一般的,提供了多样化的甲硅烷基衍生物。值得注意的是,通过应用我们的方案,可以轻松,成功地合成一些结构复杂的分子,例如桥联的双硅烷化合物。X射线分析证实了通过两个锂桥采用二聚体形式的α-硫代甲硅烷的结构。此外,提出了通过1-硅烷基-1-硫代烯烃的E / Z异构化和对硅进行亲核攻击的骨架重排的可能机理,并通过实验研究得到了证实。