Deracemization through photochemical
<i>E</i>
/
<i>Z</i>
isomerization of enamines
作者:Mouxin Huang、Long Zhang、Tianrun Pan、Sanzhong Luo
DOI:10.1126/science.abl4922
日期:2022.2.25
pharmaceutical applications. Here, we report a photochemical E / Z isomerization strategy for the deracemization of α-branched aldehydes by using simple aminocatalysts and readily available photosensitizers. A variety of racemic α-branched aldehydes could be directly transformed into either enantiomer with high selectivity. Rapid photodynamic E / Z isomerization and highly stereospecific iminium/enamine
α-支链醛的催化去外消旋是构建对映体纯 α-叔羰基化合物的直接策略,这对药物应用至关重要。在这里,我们报告了一种光化学物质乙/Z通过使用简单的氨基催化剂和容易获得的光敏剂对 α-支链醛进行去外消旋的异构化策略。多种外消旋α-支链醛可以直接转化为任一对映异构体,具有高选择性。快速光动力乙/Z异构化和高度立体定向的亚胺/烯胺互变异构是对映富集的两个关键因素。这项研究提出了一种独特的光化学乙/Z用于外部调节烯胺催化的异构化策略。