Stereoselective Synthesis of Highly Functionalized Indanes and Dibenzocycloheptadienes through Complex Radical Cascade Reactions
作者:Wangqing Kong、Noelia Fuentes、Andres García-Domínguez、Estíbaliz Merino、Cristina Nevado
DOI:10.1002/anie.201409659
日期:2015.2.16
Two highly stereoselective radical‐mediated syntheses of densely functionalized indanes and dibenzocycloheptadienes from ortho‐vinyl‐ and ortho‐vinylaryl‐substituted N‐(arylsulfonyl)‐acrylamides, respectively, are presented here. The chemoselective addition of in situ generated radicals (X.) onto the styrene moieties triggers an unprecedented reaction cascade, resulting in the formation of one new
本文分别介绍了由邻乙烯基和邻乙烯基芳基取代的N-(芳基磺酰基)-丙烯酰胺合成的两种高度立体选择性自由基介导的稠密官能化茚满和二苯并环庚二烯的合成方法。化学选择性加成原位产生的自由基的(X 。)到苯乙烯部分触发器前所未有的反应级联,导致一个新的C的形成 X键和两个新的C C键,一个正式的1,4-芳基迁移,和SO 2的挤出生成酰胺基中间体。提取H时,该中间体会以高效的方式分别生成观察到的5元和7元环碳环产物。