Unexpected Role of Anionic Ligands in the Ruthenium-Catalyzed Base-Free Selective Hydrogenation of Aldehydes
作者:Philippe Dupau、Lucia Bonomo、Laurent Kermorvan
DOI:10.1002/anie.201304912
日期:2013.10.18
Bigger and better: The replacement of anionic chloride ligands in Noyori‐type [(diamine)(diphosphine)RuCl2] catalysts with bulky carboxylate ligands enabled the efficient selective hydrogenation of a variety of aldehydes under base‐free conditions (see scheme). Turnover numbers of up to 100 000 were reached in the presence of a bulky carboxylic acid co‐catalyst. This type of catalytic system probably
更大,更好:用笨重的羧酸盐配体取代Noyori型[[二胺](二膦)RuCl 2 ]催化剂中的阴离子氯化物配体,可以在无碱条件下有效地选择性氢化多种醛(参见方案)。在庞大的羧酸助催化剂的存在下,营业额高达100,000。这种类型的催化系统可能通过内球机理运行。