Construction of <i>N</i>-Acyliminophosphoranes via Iron(II)-Catalyzed Imidization of Phosphines with <i>N</i>-Acyloxyamides
作者:Sen Lin、Bo Lin、Zongtao Zhang、Jianhui Chen、Yanshu Luo、Yuanzhi Xia
DOI:10.1021/acs.orglett.2c01238
日期:2022.5.6
Employing FeCl2 as a cheap and readily available catalyst, a facile imidization of phosphines with N-acyloxyamides is described, affording synthetically useful N-acyliminophosphoranes with high functional group tolerance. The transformation is easily performed under an air atmosphere at room temperature and could be scaled up to gram scale with a catalyst loading of 1 mol %. The iminophosphoranyl moiety
使用 FeCl 2作为廉价且容易获得的催化剂,描述了膦与 N-酰氧基酰胺的简便亚胺化反应,提供了具有高官能团耐受性的合成有用的N-酰基亚氨基正膦。该转化在室温下的空气气氛下很容易进行,并且可以在催化剂负载量为 1 mol% 的情况下放大至克级。产物中的亚氨基正膦基部分被进一步用作在 Rh(III) 催化下可控邻位C(sp 2 )-H 键酰胺化的有效导向基团。