Remarkably Mild and Simple Preparation of Sulfenate Anions from β-Sulfinylesters: A New Route to Enantioenriched Sulfoxides
作者:Caroline Caupène、Cédric Boudou、Stéphane Perrio、Patrick Metzner
DOI:10.1021/jo0478003
日期:2005.4.1
A general, efficient, and experimentally simple method for the generation of sulfenate salts has been developed using β-sulfinylesters as substrates. The process is based on a retro-Michael reaction, initiated by deprotonation at low temperature. Upon treatment with alkyl halides, the liberated sulfenates are subsequently converted into sulfoxides in good to excellent yield. Extension of the methodology
使用β-亚磺酰基酯作为底物,已经开发了一种用于生成亚磺酸盐的通用,有效且实验简单的方法。该过程基于逆迈克尔反应,该反应由低温去质子引发。用烷基卤化物处理后,释放的亚磺酸盐随后以良好至优异的产率转化为亚砜。还介绍了通过引入对映纯配体(-)-天冬氨酸,将方法扩展到前所未有的获得非外消旋亚砜的方法。