Sequential Cu-Catalyzed Amidation-Base-Mediated Camps Cyclization: A Two-Step Synthesis of 2-Aryl-4-quinolones from <i>o</i>-Halophenones
作者:Carrie P. Jones、Kevin W. Anderson、Stephen L. Buchwald
DOI:10.1021/jo701384n
日期:2007.10.1
two-step method for the preparation of 2-aryl- and 2-vinyl-4-quinolones that utilizes a copper-catalyzed amidation of o-halophenones followed by a base-promoted Camps cyclization of the resulting N-(2-ketoaryl)amides is described. With CuI, a diamine ligand, and base as the catalyst system, the amidation reactions proceed in good yields for a range of aryl, heteroaryl, and vinyl amides. The subsequent Camps
A Mild, One-Pot Synthesis of 4-Quinolones via Sequential Pd-Catalyzed Amidation and Base-Promoted Cyclization
作者:Jinkun Huang、Ying Chen、Anthony O. King、Mina Dilmeghani、Robert D. Larsen、Margaret M. Faul
DOI:10.1021/ol800837z
日期:2008.6.1
A mild, one-pot synthesis of 4-quinolones is described. Under the optimal conditions, a variety of 2-substituted 4-quinolones were synthesized via sequential palladium-catalyzed amidation of 2'-bromoacetophenones followed by base-promoted intramolecular cyclization.