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Angew Chem Int Ed Engl. 2014 Aug 25;53(35):9329-33. doi: 10.1002/anie.201404355. Epub 2014 Jul 7.

Palladium-catalyzed amination of aryl sulfides with anilines.

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  • 1Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502 (Japan).


A combination of a palladium-NHC catalyst and potassium hexamethyldisilazide enables the amination of aryl sulfides with anilines to afford a wide variety of diarylamines. The reaction conditions are versatile enough for the reaction of even bulky ortho-substituted aryl sulfides. This amination can be applied to the modular synthesis of N-aryl carbazoles from the corresponding ortho-bromothioanisoles. As aryl sulfoxides undergo extended Pummerer reactions to afford ortho-substituted aryl sulfides, the Pummerer products are thus useful substrates for the amination to culminate in efficient syntheses of a 2-anilinobenzothiophene and an indole as proof-of-principle of the utility of the extended Pummerer reaction/amination cascade.

© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


N-heterocyclic carbene ligands; Pummerer reaction; amination; aryl sulfides; palladium

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