Divergent Coupling of Alcohols and Amines Catalyzed by Isoelectronic Hydride Mn<sup>I</sup>and Fe<sup>II</sup>PNP Pincer Complexes
作者:Matthias Mastalir、Mathias Glatz、Nikolaus Gorgas、Berthold Stöger、Ernst Pittenauer、Günter Allmaier、Luis F. Veiros、Karl Kirchner
DOI:10.1002/chem.201603148
日期:2016.8.22
Herein, we describe an efficient coupling of alcohols and amines catalyzed by well‐defined isoelectronic hydride MnI and FeII complexes, which are stabilized by a PNP ligand based on the 2,6‐diaminopyridine scaffold. This reaction is an environmentally benign process implementing inexpensive, earth‐abundant non‐precious metal catalysts, and is based on the acceptorless alcohol dehydrogenation concept
在本文中,我们描述了由明确定义的等电子氢化物Mn I和Fe II配合物催化的醇与胺的有效偶联,这些配合物由基于2,6-二氨基吡啶骨架的PNP配体稳定。该反应是一种环境友好的方法,使用廉价的,富含地球的非贵金属催化剂,并且基于无受体醇脱氢概念。包括芳族和脂族底物在内的多种醇和胺都可以有效地转化为优良的分离产率。尽管在锰的情况下选择性地获得了亚胺,但是与铁形成了排他性的单烷基化胺。这些反应在无碱条件下进行,需要添加分子筛。