Volume 61, Issue 1 e202110924
Communication
Free to Read

Visible Light Induced Brønsted Acid Assisted Pd-Catalyzed Alkyl Heck Reaction of Diazo Compounds and N-Tosylhydrazones

Ziyan Zhang

Ziyan Zhang

Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX, 75080 USA

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Nikita Kvasovs

Nikita Kvasovs

Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX, 75080 USA

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Anastasiia Dubrovina

Anastasiia Dubrovina

Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX, 75080 USA

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Prof. Vladimir Gevorgyan

Corresponding Author

Prof. Vladimir Gevorgyan

Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Rd, Richardson, TX, 75080 USA

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First published: 27 October 2021
Citations: 43

Graphical Abstract

A mild visible light-induced palladium-catalyzed alkyl Heck reaction of diazo compounds and N-tosylhydrazones is reported. This method features Brønsted acid assisted generation of hybrid palladium C(sp3)-centered radical intermediate and broad reaction scope, highlighting the diverse applicability and the potential utility of this protocol in late-stage functionalization.

Abstract

A mild visible light-induced palladium-catalyzed alkyl Heck reaction of diazo compounds and N-tosylhydrazones is reported. A broad range of vinyl arenes and heteroarenes with high functional group tolerance, as well as a range of different diazo compounds, can efficiently undergo this transformation. This method features Brønsted acid-assisted generation of hybrid palladium C(sp3)-centered radical intermediate, which allowed for new selective C−H functionalization protocol.

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