期刊
RSC ADVANCES
卷 12, 期 14, 页码 8368-8373出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ra00585a
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资金
- DST-SERB [EMEQ/2018/001129]
- DST-FIST
- DST-SERB
An efficient method for the synthesis of imides using metal-free photoredox-catalyzed direct alpha-oxygenation of N,N'-disubstituted anilines has been developed. This method offers operational simplicity, high atom economy, and functional group tolerance under mild reaction conditions.
An efficient synthesis of imides using metal-free photoredox-catalyzed direct alpha-oxygenation of N,N '-disubstituted anilines in the presence of 9-mesityl-10-methylacridinium [Acr(+)-Mes]BF4 as a photoredox catalyst and molecular oxygen as a green oxidant under visible light was developed. This photochemical approach offered operational simplicity, high atom economy with a low E-factor, and functional group tolerance under mild reaction conditions. Control and quenching experiments confirmed the occurrence of a radical pathway and superoxide radical anion alpha-oxygenation reactions, and also provided strong evidence for the reductive quenching of [Acr(+)-Mes]BF4 based on a Stern-Volmer plot, which led to the proposed mechanism of this reaction.
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