Enantioselective Michael Addition of Photogenerated <i>o</i>-Quinodimethanes to Enones Catalyzed by Chiral Amino Acid Esters
作者:Xiaoqian Yuan、Shupeng Dong、Zhen Liu、Guibing Wu、Chuncheng Zou、Jinxing Ye
DOI:10.1021/acs.orglett.7b00862
日期:2017.5.5
The first example of a photoexcitated amine-catalyzed process for asymmetric Michael addition of o-quinodimethanes to enones is described. In the presence of simple chiral amino acid esters, a variety of Michael adducts were generally obtained in good yields and excellent stereoselectivities. This strategy can be successfully applied to 3-substituted-2-cyclohexenones and provides an asymmetric access
描述了光激发的胺催化的方法的第一实例,该方法用于将邻喹啉二甲烷不对称地迈克尔加成成烯酮。在简单的手性氨基酸酯的存在下,通常以高收率和优异的立体选择性获得各种迈克尔加成物。此策略可以成功地应用于3-取代的-2-环己烯酮,并提供对全碳四元中心的不对称进入。此外,还通过密度泛函理论(DFT)计算来解释高度立体控制。