Iridium-Catalyzed Aryl C–H Sulfonamidation and Amide Formation Using a Bifunctional Nitrogen Source
作者:Meng Yu、Tao Zhang、Hitesh B. Jalani、Xunqing Dong、Hongjian Lu、Guigen Li
DOI:10.1021/acs.orglett.8b01977
日期:2018.8.17
A new strategy for the sequential formation of aryl and amidyl C–N bonds is reported. Using trichloroethoxysulfonyl azide as a bifunctional nitrogen source, Ir-catalyzed aryl C–H sulfonamidation and subsequent desulfonative amide formation proceed effectively without any need of oxidants or coupling reagents. This protocol is suitable for readily available benzamides and stable carboxylates including
报道了一种依次形成芳基和aryl基C–N键的新策略。使用三氯乙氧基磺酰基叠氮化物作为双功能氮源,可以有效地进行Ir催化的芳基CHH磺酰胺化以及随后的脱磺酰胺的形成,而无需使用任何氧化剂或偶联剂。该方案适用于容易获得的苯甲酰胺和稳定的羧酸盐,包括伯,仲和叔烷基,烯基和苯基羧酸盐,从而为合成生物学和化学上有用的N-芳基酰胺提供了直接有效的方法。