Synthesis of 4-Aminoquinazolines by Palladium-Catalyzed Intramolecular Imidoylation of N-(2-Bromoaryl)amidines
作者:Gitte Van Baelen、Sander Kuijer、Lukáš Rýček、Sergey Sergeyev、Elwin Janssen、Frans J. J. de Kanter、Bert U. W. Maes、Eelco Ruijter、Romano V. A. Orru
DOI:10.1002/chem.201102468
日期:2011.12.23
investigated the intramolecular imidoylative cross‐coupling of N‐(2‐bromoaryl)amidines, leading to 4‐aminoquinazolines. After thorough optimization of the reaction with respect to palladium source and loading, ligand, base, temperature, and solvent, a small library of 4‐aminoquinazolines was prepared to determine the scope of this method. Various substituents are tolerated on the amidine and the isocyanide