Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 17, Issue 47, Pages 10020-10029Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ob02102g
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Funding
- Scientific Research Fund of Hunan Provincial Education Department [16A087, 18B355, 18B350]
- Hunan Provincial Innovation Foundation For Postgraduate [CX20190921]
- Natural Science Foundation of Hunan Province [2018JJ3208, 2019JJ50204]
- National Natural Science Foundation of China [21602056, 51874132]
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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 for accessing sulfonyl radicals. This method features excellent functional group tolerance 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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