Substituted Hantzsch Esters as Versatile Radical Reservoirs in Photoredox Reactions

Substituted Hantzsch esters can act as radical reservoirs in photoredox reactions, steadily releasing a carbon radical and a hydrogen atom radical in the absence of an additional electron acceptor. We propose that radical release by substituted Hantzsch esters occurs via a mechanism involving an int...

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Bibliographic Details
Published in:Advanced synthesis & catalysis 2018-03, Vol.360 (5), p.925-931
Main Authors: Gu, Fangjun, Huang, Wenhao, Liu, Xu, Chen, Wenxin, Cheng, Xu
Format: Article
Language:English
Subjects:
Alkylation
Esters
Hantzsch ester
Photoredox
Radical
Reagents
Reservoirs
Styrenes
Substitutes
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Summary:Substituted Hantzsch esters can act as radical reservoirs in photoredox reactions, steadily releasing a carbon radical and a hydrogen atom radical in the absence of an additional electron acceptor. We propose that radical release by substituted Hantzsch esters occurs via a mechanism involving an internal redox cycle. Cinnamidecinnamides, styrenes, α,β‐unsaturated acids, and diarylethenes could be alkylated smoothly with these reagents.
ISSN:1615-4150
1615-4169
DOI:10.1002/adsc.201701348