Ketones and Aldehydes as <i>O</i>-Nucleophiles in Iridium-Catalyzed Intramolecular Asymmetric Allylic Substitution Reaction
作者:Ye Wang、Wen-Yun Zhang、Shu-Li You
DOI:10.1021/jacs.8b13182
日期:2019.2.13
Ketones and aldehydes are employed as enol O-nucleophiles in an iridium-catalyzed asymmetric allylic substitution reaction. The reaction proceeds well in the presence of a well-defined chiral iridium complex under mild conditions. A series of chiral 2 H-1,4-oxazine skeletons can be obtained in up to 94% yield with 99% ee. The utility of this novel method has been demonstrated by its implementation
酮和醛在铱催化的不对称烯丙基取代反应中用作烯醇 O-亲核试剂。在温和条件下,在明确定义的手性铱配合物的存在下,反应进行得很好。可以以高达 94% 的产率和 99% 的 ee 获得一系列手性 2 H-1,4-恶嗪骨架。这种新方法的实用性已通过其在 (+)-chelonin A 的第一次对映选择性合成中的实施得到证明。