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Indium(III) Catalyzed Reactions of Vinyl Azides and Indoles

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journal contribution
posted on 2020-04-24, 19:18 authored by Atul A. More, Alex M. Szpilman
Indium trichloride catalyzes the reaction of vinyl azides with unfunctionalized indoles to give vinyl indoles. This is the first example of displacement of the azide group by a carbon nucleophile while preserving the vinyl function. The protocol employs very mild reaction conditions and offers excellent yields of diverse 3-vinyl indoles. It is amenable to gram scale. Access to a library of 3,3′-bis­(indolyl)­methanes through condensation of vinyl azides with 2 equiv of an indole is demonstrated.

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