Visible-Light-Induced Oxidation/[3 + 2] Cycloaddition/Oxidative Aromatization to Construct Benzo[<i>a</i>]carbazoles from 1,2,3,4-Tetrahydronaphthalene and Arylhydrazine Hydrochlorides
作者:Jiaxuan Shen、Nannan Li、Yanjiang Yu、Chunhua Ma
DOI:10.1021/acs.orglett.9b02939
日期:2019.9.6
An efficient synthesis of benzo[a]carbazoles via visible-light-induced tandem oxidation/[3 + 2] cycloaddition/oxidative aromatization reactions was reported. The benzylic C(sp3)-H of tetrahydronaphthalene was activated through visible-light photoredox catalyst with oxygen as the clean oxidant under mild reaction conditions. This protocol proceeds efficiently with broad substrate scope, and the mechanism
据报道,通过可见光串联氧化/ [3 + 2]环加成/氧化芳构化反应可有效合成苯并[a]咔唑。四氢萘的苄基C(sp3)-H通过可见光的光氧化还原催化剂在温和的反应条件下用氧气作为清洁氧化剂进行活化。该协议在广泛的底物范围内有效进行,并进行了机理研究。