Impact of the Methylene Bridge Substitution in Chelating NHC‐Phosphine Mn(I) Catalyst for Ketone Hydrogenation
作者:Ekaterina S. Gulyaeva、Ruqaya Buhaibeh、Mohamed Boundor、Karim Azouzi、Jérémy Willot、Stéphanie Bastin、Carine Duhayon、Noël Lugan、Oleg A. Filippov、Jean‐Baptiste Sortais、Dmitry A. Valyaev、Yves Canac
DOI:10.1002/chem.202304201
日期:2024.4.16
Bridge substituent matters: the incorporation of phenyl group into the methylene bridge of bidentate phosphine-N-heterocyclic carbene (NHC) ligand leads to significant increase of catalytic performance for the corresponding Mn(I) complex. Mechanistic studies revealed that this effect was caused by stabilization of key metal intermediates including a highly reactive anionic hydride complex due to more
桥取代基问题:将苯基引入二齿膦-N-杂环卡宾(NHC)配体的亚甲基桥中导致相应Mn(I)配合物的催化性能显着提高。机理研究表明,这种效应是由关键金属中间体的稳定引起的,其中包括由于更有效的负电荷离域而导致的高反应性阴离子氢化物络合物。