Probing Chiral Sulfoximine Auxiliaries in Ru(II)-Catalyzed One-Pot Asymmetric C–H Hydroarylation and Annulations with Alkynes
作者:Somratan Sau、Kallol Mukherjee、Koneti Kondalarao、Vincent Gandon、Akhila K. Sahoo
DOI:10.1021/acs.orglett.3c02969
日期:2023.10.27
herein is a chiral sulfoximine-enabled Ru(II)-catalyzed asymmetric C–H activation/functionalization involving intramolecular hydroarylation and functionalization/annulation of alkynes. This process constructs dihydrobenzofuran- or indoline-fused isoquinolinones having a tertiary or quaternary stereocenter with good yields and enantioselectivities (up to 97:3 enantiomeric ratio). The chiral sulfoxide
本文开发的是一种手性亚砜亚胺催化的 Ru(II) 催化的不对称 C-H 活化/功能化,涉及炔烃的分子内加氢芳基化和功能化/环化。该方法构建了具有三级或四级立构中心的二氢苯并呋喃或二氢吲哚稠合异喹啉酮,具有良好的产率和对映选择性(对映体比例高达 97:3)。用于合成对映体纯亚砜亚胺的手性亚砜前体在反应过程中自发消除。它可以在不损失对映体纯度(〜99%对映体过量)的情况下回收并重复使用。