Highly Diastereoselective Palladium-Catalyzed Oxidative Cascade Carbonylative Carbocyclization of Enallenols
作者:Daniels Posevins、Man-Bo Li、Erik Svensson Grape、A. Ken Inge、Youai Qiu、Jan-E. Bäckvall
DOI:10.1021/acs.orglett.9b04134
日期:2020.1.17
A palladium-catalyzed oxidative cascade carbonylative carbocyclization of enallenols was developed. Under mild reaction conditions, a range of cis-fused [5,5] bicyclic γ-lactones and γ-lactams with a 1,3-diene motif were obtained in good yields with high diastereoselectivity. The obtained lactone/lactam products are viable substrates for a stereoselective Diels-Alder reaction with N-phenylmaleimide
开发了钯催化烯醇的氧化级联羰基碳环化反应。在温和的反应条件下,以高收率和高非对映选择性获得了一系列具有1,3-二烯基序的顺式[5,5]双环γ-内酯和γ-内酰胺。所获得的内酯/内酰胺产物是用于与N-苯基马来酰亚胺进行立体选择性Diels-Alder反应的可行底物,从而提供了具有更高分子复杂性的多环化合物。