Acceptorless Dehydrogenation of N‐Heterocycles by Merging Visible‐Light Photoredox Catalysis and Cobalt Catalysis

Herein, the first acceptorless dehydrogenation of tetrahydroquinolines (THQs), indolines, and other related N‐heterocycles, by merging visible‐light photoredox catalysis and cobalt catalysis at ambient temperature, is described. The potential applications to organic transformations and hydrogen‐stor...

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Bibliographic Details
Published in:	Angewandte Chemie (International ed.) 2017-03, Vol.56 (11), p.3080-3084
Main Authors:	He, Ke‐Han, Tan, Fang‐Fang, Zhou, Chao‐Zheng, Zhou, Gui‐Jiang, Yang, Xiao‐Long, Li, Yang
Format:	Article
Language:	eng
Subjects:	Ambient temperature Catalysis Cobalt Dehydrogenation heterocycles Heterocyclic compounds Hydrogen storage materials photochemistry Photoredox catalysis Quenching reaction mechanisms
Online Access:	Request full text
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Summary:	Herein, the first acceptorless dehydrogenation of tetrahydroquinolines (THQs), indolines, and other related N‐heterocycles, by merging visible‐light photoredox catalysis and cobalt catalysis at ambient temperature, is described. The potential applications to organic transformations and hydrogen‐storage materials are demonstrated. Primary mechanistic investigations indicate that the catalytic cycle occurs predominantly by an oxidative quenching pathway. Cobalt and blue: The titled method is utilized for the reversible dehydrogenation‐hydrogenation protocol at ambient temperature under mild reaction conditions. Primary mechanistic investigations indicate that the catalytic cycle relies predominantly on an oxidative quenching pathway.
ISSN:	1433-7851 1521-3773