Asymmetric Intramolecular Oxa-Michael Reactions of Cyclohexadienones Catalyzed by a Primary Amine Salt
作者:Wenbin Wu、Xin Li、Huicai Huang、Xiaoqian Yuan、Junzhu Lu、Kailong Zhu、Jinxing Ye
DOI:10.1002/anie.201206977
日期:2013.2.4
Michael brings the rings: An asymmetric intramolecular oxa‐Michael reaction involving iminium activation has been developed. This reaction provides enantioenriched 1,4‐dioxane derivatives with up to 99 % yield and 98 % ee. The method allows for concise and stereoselective access to stereodiverse, complex tetracyclic compounds containing a bicyclo[2.2.2]octan‐2‐one backbone with multiple chiral centers
迈克尔带来了指环:已经开发出涉及亚胺基活化的不对称分子内氧杂-迈克尔反应。该反应提供了对映体富集的1,4-二恶烷衍生物,产率高达99%,ee高达98%。该方法允许对立体多样的复杂四环化合物进行简明和立体选择性的访问,该化合物包含具有多个手性中心的双环[2.2.2] octan-2-one骨架。