A Highly Regio- and Stereoselective Cascade Annulation of Enals and Benzodi(enone)s Catalyzed by N-Heterocyclic Carbenes
作者:Xinqiang Fang、Kun Jiang、Chong Xing、Lin Hao、Yonggui Robin Chi
DOI:10.1002/anie.201007144
日期:2011.2.18
Three stereogenic centers in a row: The unconventional activation of enal compounds mediated by an N‐heterocyclic carbene (NHC) has generated three consecutive reactive carbon centers that undergo highly regio‐ and stereoselective annulations with di(enone)s to generate benzotricyclic products containing multiple stereogenic centers (see scheme).
连续三个立体生成中心:由N杂环卡宾(NHC)介导的烯类化合物的非常规活化产生了三个连续的活性碳中心,这些中心经历了对二(烯酮)的高度区域和立体选择性环化反应,从而生成包含多个立体定位中心(请参阅方案)。