Ligand-enabled and magnesium-activated hydrogenation with earth-abundant cobalt catalysts
作者:Bo Han、Miaomiao Zhang、Hongmei Jiao、Haojie Ma、Jijiang Wang、Yuqi Zhang
DOI:10.1039/d1ra07266h
日期:——
Pd, Ir, Ru, and Rh with inexpensive earth-abundant metals like cobalt (Co) is attracting wider research interest in catalysis. Cobalt catalysts are now undergoing a renaissance in hydrogenation reactions. Herein, we describe a hydrogenation method for polycyclic aromatic hydrocarbons (PAHs) and olefins with a magnesium-activated earth-abundant Co catalyst. When diketimine was used as a ligand, simple
用廉价的地球丰富的金属如钴 (Co) 代替昂贵的贵金属如 Pt、Pd、Ir、Ru 和 Rh,正在吸引更广泛的催化研究兴趣。钴催化剂现在正经历加氢反应的复兴。在此,我们描述了一种使用镁活化的富含地球的 Co 催化剂对多环芳烃 (PAHs) 和烯烃进行加氢的方法。当二酮亚胺用作配体时,CoBr 2的简单且廉价的金属盐与镁结合在温和条件下对具有挑战性的多环芳烃进行位点选择性加氢显示出高催化活性。共催化氢化能够减少多环芳烃的两侧芳烃。多种多环芳烃可以以位点选择性方式进行氢化,这为制备部分还原的多环烃基序提供了一种经济、清洁和选择性的策略,而这些多环烃基序很难通过常规方法制备。还证明了使用定义明确的二酮亚胺配体 Co 配合物作为多环芳烃和烯烃选择性加氢的预催化剂。