A General Method for the Synthesis of Unsymmetrically Substituted Ureas via Palladium-Catalyzed Amidation
Organic Letters2009Vol. 11(4), pp. 947–950
Citations Over TimeTop 10% of 2009 papers
Abstract
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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