作者:Kevin M. Allegre、Nathan Brennan、Jon A. Tunge
DOI:10.1021/acs.orglett.8b01566
日期:2018.7.20
A method where an allyl alcohol is formed from a Tsuji–Trost allylation between a vinyl epoxide and an acyl containing nucleophile is described. Subsequently, a retro-Claisen condensation is utilized as a means of through-space anion relay. The anion relay results in the formation of a reactive carbanion and simultaneously activates an allylic alcohol toward intramolecular Tsuji–Trost cyclopropanation
描述了一种方法,其中烯丙基醇由乙烯基环氧化物和含酰基亲核试剂之间的Tsuji-Trost烯丙基化反应形成。随后,逆向克莱森缩合被用作通过空间阴离子中继的手段。阴离子中继导致反应性碳负离子的形成,并同时使烯丙基醇向分子内Tsuji-Trost环丙烷化。因此,在一个锅中,使用温和且操作简单的程序,将Tsuji-Trost烯丙基化,retro-Claisen活化和Tsuji-Trost环丙烷化相结合,可从环氧乙烷中获得合成有用的乙烯基环丙烷。