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1. Synthesis of Quinazolin-4(3H)-ones via Pd(II)-Catalyzed Intramolecular C(sp²)--H Carboxamidation of N-arylamidines.

Author

Bin Ma, Yong Wang, Jiangling Peng, and Qiang Zhu

Subjects
*QUINAZOLINE, *HETEROCYCLIC compounds, *AMIDINES, *AROMATIC amines, *ORGANIC chemistry
Abstract

An efficient synthesis of quinazotin-4(3H)-ones from N-arylamidines, through palladium-catalyzed intramolecular C(sp²)-H carboxamidation, has been developed. The reaction, carried out in the presence of 1.0 equiv of CuO as oxidant under atmospheric pressure of CO, provides diversified 2-aryl(alkyl)-quinazolin-4(3H)-ones in reasonable to good yields from N-aryla-midines, which are readily derived from anilines and nitriles. Compared with existing approaches to quinazolin-4(3H)-ones, the current strategy features atom-economy and step-efficiency. [ABSTRACT FROM AUTHOR]

Published
2011
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