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Issue 12, 2017
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Rhodium(II)-catalyzed intermolecular [3 + 2] annulation of N-vinyl indoles with N-tosyl-1,2,3-triazoles via an aza-vinyl Rh carbene

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Abstract

The rhodium(II)-catalyzed annulations of N-vinyl indole derivatives and N-tosyl-1,2,3-triazoles have been developed in this paper, providing a convenient, efficient and straightforward access to synthesize indoles containing a N-dihydropyrrole in moderate to good yields. Furthermore, the reaction of N-vinyl indoles with 2.5 equiv. of N-tosyl-1,2,3-triazoles gave C3-functionalized indoles containing a N-dihydropyrrole in moderate yields after reduction with NaBH3CN in a one-pot manner. This finding gives a new synthetic protocol for the preparation of indoles containing a N-dihydropyrrole under mild conditions.

Graphical abstract: Rhodium(ii)-catalyzed intermolecular [3 + 2] annulation of N-vinyl indoles with N-tosyl-1,2,3-triazoles via an aza-vinyl Rh carbene

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Publication details

The article was received on 08 Aug 2017, accepted on 07 Sep 2017 and first published on 12 Sep 2017


Article type: Research Article
DOI: 10.1039/C7QO00703E
Citation: Org. Chem. Front., 2017,4, 2459-2464
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    Rhodium(II)-catalyzed intermolecular [3 + 2] annulation of N-vinyl indoles with N-tosyl-1,2,3-triazoles via an aza-vinyl Rh carbene

    B. Jiang and M. Shi, Org. Chem. Front., 2017, 4, 2459
    DOI: 10.1039/C7QO00703E

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