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Issue 11, 2019
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Photoredox-catalyzed cascade annulation of N-propargylindoles with sulfonyl chlorides: access to 2-sulfonated 9H-pyrrolo[1,2-a]indoles

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Abstract

A photoredox-catalyzed cascade radical reaction of N-propargylindoles and sulfonyl chlorides to 2-sulfonated 9H-pyrrolo[1,2-a]indoles was described. By the direct use of commercially available sulfonyl chlorides as radical precursors, this transformation proceeded smoothly to afford the corresponding products in moderate to good yields under external oxidant-free conditions at room temperature.

Graphical abstract: Photoredox-catalyzed cascade annulation of N-propargylindoles with sulfonyl chlorides: access to 2-sulfonated 9H-pyrrolo[1,2-a]indoles

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Supplementary files

Article information


Submitted
27 Jan 2019
Accepted
15 Feb 2019
First published
15 Feb 2019

Org. Biomol. Chem., 2019,17, 2873-2876
Article type
Communication

Photoredox-catalyzed cascade annulation of N-propargylindoles with sulfonyl chlorides: access to 2-sulfonated 9H-pyrrolo[1,2-a]indoles

P. Zhang, S. Shi, X. Gao, S. Han, J. Lin and Y. Zhao, Org. Biomol. Chem., 2019, 17, 2873
DOI: 10.1039/C9OB00218A

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