Fast and Chemoselective Addition of Highly Polarized Lithium Phosphides Generated in Deep Eutectic Solvents to Aldehydes and Epoxides
作者:Luciana Cicco、Alba Fombona‐Pascual、Alba Sánchez‐Condado、Gabino A. Carriedo、Filippo M. Perna、Vito Capriati、Alejandro Presa Soto、Joaquín García‐Álvarez
DOI:10.1002/cssc.202001449
日期:2020.9.18
solvents as sustainable reaction media, at room temperature and in the absence of protecting atmosphere, through direct deprotonation of both aliphatic and aromatic secondary phosphines (HPR2) by n‐BuLi. The subsequent addition of in‐situ generated LiPR2 to aldehydes or epoxides proceeded quickly and chemoselectively, thereby allowing the straightforward access to the corresponding α‐ or β‐hydroxy phosphine
高度偏振的锂磷化物(LiPR 2)的合成,对于第一次,在深共晶的溶剂作为可持续的反应介质,在室温下并且在没有保护气氛,通过脂族和芳族仲膦的直接去质子化(HPR 2)由n- BuLi提供。随后向醛或环氧化物中添加原位生成的LiPR 2可以快速,化学选择性地进行,从而可以分别在空气和室温(工作条件)下直接直接进入相应的α-或β-羟基膦氧化物。在s嵌段元素的极性有机金属化学领域,传统上被视为教科书禁止的条件。