A rhodium(ii) catalysed domino synthesis of azepino fused diindoles from isatin tethered N-sulfonyl-1,2,3-triazoles and indoles.

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2020
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Abstract
An efficient and convenient protocol for the synthesis of a novel class of azepino fused diindoles from isatin tethered N-sulfonyl-1,2,3-triazoles and indoles has been disclosed. The reaction proceeds via denitrogenative aza-vinyl rhodium carbene formation to give a carbonyl ylide, which with indole results in 1,3-dipolar cycloaddition followed by sequential semipinacol rearrangement/ring expansion/oxidation to produce azepino fused diindoles. The reaction shows a broad substrate scope giving up to 81% yield. Furthermore, reversible catalytic hydrogenation and photophysical studies were carried out to demonstrate the application of these molecules.
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kahar2020achemical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Kahar, Nilesh;Jadhav, Pankaj;Reddy, R V Ramana;Dawande, Sudam;
Journal Chemical communications (Cambridge, England)
Year 2020
DOI
10.1039/c9cc08377d
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