Enantioselective Parallel Kinetic Resolution of Aziridine-Containing Quinoxalines via Chiral Phosphoric Acid-Catalyzed Transfer Hydrogenation
作者:Yin-Jia Jhang、Oleksii Zhelavskyi、Pavel Nagorny
DOI:10.1021/acs.orglett.3c03072
日期:2023.10.27
This article describes the asymmetric synthesis of chiral aziridinoquinoxalines using (R)-TRIP-catalyzed parallel kinetic resolution under transfer hydrogenation conditions. This resolution was successfully accomplished for 16 different substrates and led to highly enantioenriched diastereomers with the (R)-configuration of the newly formed stereocenter (32–61% yield and 64–99% ee for the (R,R,R)-diastereomers
本文描述了在转移氢化条件下使用 ( R )-TRIP 催化的平行动力学拆分手性氮丙啶基喹喔啉的不对称合成。16 种不同的底物成功实现了这一分辨率,并产生了高度对映体富集的非对映体,其新形成的立体中心具有 ( R )-构型(( R,R,R )-非对映体的产率为 32–61%,ee 为 64–99% ( S,S,R ) -非对映体的产率为 7–46%,ee 为 97–99% )。该过程可以与(S,S,R)-非对映异构体与苯硫酚的开环偶联,产生具有三个连续立体中心的手性四氢喹喔啉。