Enantioselective Aerobic Oxidative C(sp<sup>3</sup>)–H Olefination of Amines via Cooperative Photoredox and Asymmetric Catalysis
作者:Guo Wei、Chenhao Zhang、Filip Bureš、Xinyi Ye、Choon-Hong Tan、Zhiyong Jiang
DOI:10.1021/acscatal.6b00846
日期:2016.6.3
A cooperative photoredox and asymmetric catalysis for the enantioselective aerobic oxidative C(sp3)–H olefination of tetrahydro-β-carbolines (THCs) is reported. This method, which is also effective for tetrahydroisoquinolines (THIQs), features a triple-catalyst strategy, involving a dicyanopyrazine-derived chromophore (DPZ) as the metal-free photoredox catalyst, a chiral Lewis base catalyst, and an
据报道,对于四氢-β-咔啉(THCs)的对映选择性好氧氧化C(sp 3)-H烯化反应,存在协同的光氧化还原和不对称催化作用。该方法对四氢异喹啉(THIQs)也有效,具有三重催化剂策略,其中包括由二氰基吡嗪衍生的生色团(DPZ)作为无金属的光氧化还原催化剂,手性路易斯碱催化剂和无机盐助催化剂。当前的协议提供了直接获得一系列有价值的α-取代的THC和THIQ的途径,且产率高,具有出色的区域选择性和对映选择性(ee高达95%)。