Palladium-Catalyzed Unactivated C(sp<sup>3</sup>)–H Bond Activation and Intramolecular Amination of Carboxamides: A New Approach to β-Lactams
作者:Wen-Wu Sun、Pei Cao、Ren-Qiang Mei、Yue Li、Yuan-Liang Ma、Bin Wu
DOI:10.1021/ol403364k
日期:2014.1.17
An efficient method to synthesize the beta-lactams with high regioselectivity via Pd-catalyzed C(sp(3))-H bond activation and intramolecular arnination of simple and readily available aminoquinoline carboxamides was demonstrated. C6F5I plays a significant role in the formation of the C-N bond of the four-membered ring beta-lactams. High yield along with wide substrate scope and functional group tolerance makes this reaction applicable to build natural-product-derived beta-lactams. This method has been applied to the efficient synthesis of the beta-lactamase inhibitor MK-8712.