Access to Stable Quaternary Phosphiranium Salts by P-Alkylation and P-Arylation of Phosphiranes
作者:Vincent Dalla、Catherine Taillier、Julien Gasnot、Clément Botella、Sébastien Comesse、Sami Lakhdar、Carole Alayrac、Annie-Claude Gaumont
DOI:10.1055/s-0040-1708000
日期:2020.6
We report the preparation of phosphiranium salts by quaternarization of phosphiranes, a class of sensitive, highly strained, and poorly nucleophilic cyclic phosphines. High-yielding introduction of a varied set of alkyl groups including methylene ester arms was accomplished under mild conditions. A Cu-catalyzed electrophilic arylation of phosphiranes using diaryl iodonium reagents was also achieved
我们报告了通过 phosphiranes 季铵化制备 phosphiranium 盐,这是一类敏感的、高度紧张的、亲核性差的环膦。在温和条件下实现了包括亚甲基酯臂在内的一系列不同烷基的高产率引入。还实现了使用二芳基碘鎓试剂对磷烷进行 Cu 催化的亲电芳基化,以产生前所未有的 P,P-二芳基磷鎓盐,并具有良好的效率。