Enantioselective and Diastereoselective C–H Alkylation of Benzamides: Synergized Axial and Central Chirality via a Single Stereodetermining Step
作者:Jinlei Wang、Haohua Chen、Lingheng Kong、Fen Wang、Yu Lan、Xingwei Li
DOI:10.1021/acscatal.1c02450
日期:2021.8.6
In this report, distally disposed axial and central chirality has been installed in a synergistic fashion via rhodium-catalyzed C–H alkylation of benzamides using N-arylmaleimide as the alkylating reagent, in which the enantio- and diastereo-determining steps are merged into a single one. The coupling system features mild reaction conditions, broad substrate scope, and excellent enantio- and diastereoselectivity
在本报告中,使用N-芳基马来酰亚胺作为烷基化试剂,通过铑催化的苯甲酰胺的 C-H 烷基化,以协同方式安装了位于远端的轴向和中心手性,其中对映体和非对映体决定步骤合并为单一个。该偶联体系具有反应条件温和、底物范围广、对映选择性和非对映选择性优异等特点。通过明智地选择手性铑环戊二烯基催化剂来实现手性诱导,该催化剂用于控制烯烃单元的取向和前手性 C-N 键。