Memory of Chirality (MOC) Concept in Imino-Aldol Reaction: Enantioselective Synthesis of <i>α,β</i>-Diamino Esters and Aziridines
作者:Manas K. Ghorai、Koena Ghosh、A. K. Yadav、Y. Nanaji、Sandipan Halder、Masthanvali Sayyad
DOI:10.1021/jo302018a
日期:2013.3.15
simple strategy for the synthesis of chiral α,β-diamino- and α-amino,β-hydroxy ester derivatives in high yields with moderate to high ee has been developed via asymmetric imino-aldol and aldol reactions, respectively, starting from protected aminoesters employing memory of chirality concept for chiral induction. This strategy has been extended for the enantioselective synthesis of aziridines (ee up to
从受保护的氨基酯开始,分别通过不对称的亚氨基-羟醛和羟醛反应,开发了一种高产率,中等至高ee的手性α,β-二氨基-和α-氨基,β-羟基酯衍生物合成的简单策略。使用手性概念的记忆进行手性诱导。该策略已扩展到氮丙啶的对映选择性合成(ee高达92%)。亚氨基-醇醛加合物的绝对构型已经确定。产品的立体化学结果已通过适当的机理进行了解释,并得到了计算研究的支持。