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
对于2-芳基-和2-乙烯基-4-喹诺酮的制备直接两步法,其利用的铜催化的酰胺化ö -halophenones然后将所得的碱促进环化营ñ - (2 -ketoaryl描述了酰胺。使用CuI(一种二胺配体)和碱作为催化剂体系,对于一系列芳基,杂芳基和乙烯基酰胺,酰胺化反应的收率很高。随后的营地环化有效地提供了所描述条件的所需4-喹诺酮类药物。