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The regioselective Larock indole synthesis catalyzed by NHC–palladium complexes?

RSC Advances Pub Date: 2013-07-30 DOI: 10.1039/C3RA42788A

Abstract

The first practical and regioselective process for the synthesis of 2,3-disubstituted indoles from the reaction of o-iodoanilines or o-bromoanilines and their derivatives with symmetrical and unsymmetrical internal alkynes catalyzed by a ferrocene-functionalized N-heterocyclic carbene (NHC)–palladium complex has been developed, and the indoles were isolated in good yields with high regioselectivity.

Graphical abstract: The regioselective Larock indole synthesis catalyzed by NHC–palladium complexes

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