Modular Access to the Stereoisomers of Fused Bicyclic Azepines: Rhodium‐Catalyzed Intramolecular Stereospecific Hetero‐[5+2] Cycloaddition of Vinyl Aziridines and Alkenes
作者:Jian‐Jun Feng、Tao‐Yan Lin、Hai‐Hong Wu、Junliang Zhang
DOI:10.1002/anie.201509185
日期:2015.12.21
first rhodium‐catalyzed intramolecular hetero‐[5+2] cycloaddition reaction of vinyl aziridines and alkenes was realized, wherein both internal and terminal alkenes were applicable. With this method, a variety of unique substituted chiral fused bicyclic azepines, bearing multiple contiguous stereogenic centers, were facilely accessed in a straightforward, high‐yielding, and highly stereoselective manner
实现了乙烯基氮丙啶和烯烃的第一个铑催化的分子内杂[5 + 2]环加成反应,其中内部和末端烯烃均适用。通过这种方法,可以在温和的反应条件下,以简单,高产且高度立体选择性的方式轻松地获得各种带有多个连续立体中心的独特取代的手性稠合双环cyclic庚因。值得注意的是, 乙烯基氮丙啶-烯烃底物中CC键的E / Z几何形状会影响环加合物的顺/反立体化学反应,最多可提供6种立体异构体。