Phosphonate-Mediated Immobilization of Rhodium/Bipyridine Hydrogenation Catalysts
作者:Florian Forato、Anouar Belhboub、Julien Monot、Marc Petit、Roland Benoit、Vincent Sarou-Kanian、Franck Fayon、Denis Jacquemin、Clémence Queffelec、Bruno Bujoli
DOI:10.1002/chem.201705283
日期:2018.2.16
or 6,6′‐positions)—the resulting supported catalysts showed comparable chemoselectivity but different kinetics for the hydrogenation of 6‐methyl‐5‐hepten‐2‐one under hydrogen pressure. Characterization of the six supported catalysts suggested that the intrinsic geometry of each of the phosphonate‐derivatized 2,2′‐bipyridines leads to supported catalysts with different microstructures and different
膦酸酯衍生的2,2'-联吡啶(bpy)配体L的RhL 2复合物固定在原位生成的氧化钛颗粒上。根据Bipy配体的结构-膦酸酯端基所连接的系链(1或2)的数量及其在2,2'-联吡啶骨架(4,4'-,5,5'-,或6,6'-位)-生成的负载型催化剂表现出可比的化学选择性,但在氢气压力下加氢6-甲基-5-庚基-2-酮的动力学不同。六种负载型催化剂的表征表明,每种膦酸酯衍生的2,2'-联吡啶的内在几何形状导致具有不同微观结构和不同RhL 2排列的负载型催化剂 固体表面的有机物种类,从而影响它们的反应性。