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Visible-light-induced cascade sulfonylation/cyclization of Npropargylindoles with aryldiazonium tetrafluoroborates via the insertion of sulfur dioxide

Abstract

A simple and efficient visible-light-catalyzed cascade sulfonylation/cyclization of N-propargylindoles with K2S2O5 and aryldiazonium tetrafluoroborates for the construction of 2-sulfonyl-substituted 9H-pyrrolo[1,2-a]indoles is developed. In this transformation, K2S2O5 as a simple and inexpensive sulfur dioxide source provides sulfur dioxide to accessing sulfonyl radicals. This method features excellent functional group tollerance and offers a convenient route for assembling a new C−C bond and two new C−S bonds in one step.

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Publication details

The article was received on 28 Sep 2019, accepted on 07 Nov 2019 and first published on 07 Nov 2019


Article type: Paper
DOI: 10.1039/C9OB02102G
Org. Biomol. Chem., 2019, Accepted Manuscript

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    Visible-light-induced cascade sulfonylation/cyclization of Npropargylindoles with aryldiazonium tetrafluoroborates via the insertion of sulfur dioxide

    Y. Liu, Q. Wang, Z. Chen, P. Chen, K. Tang, Q. Zhou and J. Xie, Org. Biomol. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9OB02102G

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