Enantioselective Oxidative Phenol-Indole [3 + 2] Coupling Enabled by Biomimetic Mn(III)/Brønsted Acid Relay Catalysis
作者:Qile Yu、Yu Fu、Jianjian Huang、Jingyang Qin、Honghua Zuo、Yuzhou Wu、Fangrui Zhong
DOI:10.1021/acscatal.9b01734
日期:2019.8.2
combination with chiral phosphoric acid relay catalysis, enabling an enantioselective direct oxidative phenol-indole [3 + 2] coupling reaction to access structurally diverse chiral benzofuroindolines. Differing from previous methods that exclusively make use of isolatable quinones or their imines, this system is capable of harnessing transient N-Boc quinone imines, and highlights its synthetic potential
(salen)Mn(III)配合物与酚氧化酶的金属代谢因子一起用作仿生替代物,与手性磷酸中继催化结合使用,可实现对映选择性直接氧化酚-吲哚[3 + 2]偶联反应结构上不同的手性苯并呋喃二氢吲哚。与以前仅使用可分离的醌或其亚胺的方法不同,该系统能够利用瞬态N -Boc醌亚胺,并突出了其具有高对映选择性,高步长和原子经济性,良性反应条件以及出色的催化作用的合成潜力手性磷酸(CPA)的营业额(低至0.01 mol%;营业额(TON)最高至4100)。