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Issue 9, 2018
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Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines

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Abstract

A catalytic combination of eosin Y–Yb(OTf)3 has been developed to catalyse the visible light mediated synthesis of indole substituted heterobiaryl-pyrazolo[3,4-b]pyridines in good yields under mild reaction conditions. The current reaction proceeds through a dual, Lewis acid and oxidative photo-catalysis to afford the corresponding product at room temperature via electrocyclization and indole ring opening.

Graphical abstract: Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines

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Publication details

The article was received on 20 Feb 2018, accepted on 28 Mar 2018 and first published on 30 Mar 2018


Article type: Letter
DOI: 10.1039/C8NJ00862K
Citation: New J. Chem., 2018,42, 6617-6620
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    Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines

    S. Singh, P. Chauhan, M. Ravi and P. P. Yadav, New J. Chem., 2018, 42, 6617
    DOI: 10.1039/C8NJ00862K

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