4.8 Article

A General Method for the synthesis of Unsymmetrically Substituted Ureas via Palladium-Catalyzed Amidation

Journal

ORGANIC LETTERS
Volume 11, Issue 4, Pages 947-950

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol802931m

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A general and practical method for the preparation of unsymmetrically substituted ureas has been developed utilizing palladium-catalyzed amidation. Both aryl bromides and chlorides, as well as heteroaryl chlorides, have been coupled to aryl, benzyl, and aliphatic ureas by using a novel nonproprietary bipyrazole ligand (bippyphos).

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