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Issue 14, 2018
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Metal-free hydrogen transfer reduction of 3-hydroxy-3-indolyloxindoles: a novel method for the synthesis of 3,3′-biindolin-2-ones

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Abstract

Herein, a new approach for the synthesis of 3,3′-biindolin-2-ones is reported. The transformation has been successfully performed following a one-step strategy starting from 3-hydroxy-3-indolyloxindoles. The reaction proceeds smoothly under mild conditions and is applicable to a broad scope of substrates. In this process, a number of products were obtained in good to excellent yields (≥99%) using Brønsted acid as a catalyst and benzothiazolines as the hydrogen source.

Graphical abstract: Metal-free hydrogen transfer reduction of 3-hydroxy-3-indolyloxindoles: a novel method for the synthesis of 3,3′-biindolin-2-ones

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Publication details

The article was received on 04 Apr 2018, accepted on 11 May 2018 and first published on 14 May 2018


Article type: Letter
DOI: 10.1039/C8NJ01621F
Citation: New J. Chem., 2018,42, 11255-11258
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    Metal-free hydrogen transfer reduction of 3-hydroxy-3-indolyloxindoles: a novel method for the synthesis of 3,3′-biindolin-2-ones

    G. Liu, H. Zhang, X. Guan, J. Gao, X. Qin, G. Zhang and S. Zhang, New J. Chem., 2018, 42, 11255
    DOI: 10.1039/C8NJ01621F

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