Ruthenium(II)‐(
<i>p</i>
‐cymene)‐N‐Heterocyclic Carbene Complexes for the
<i>N</i>
‐Alkylation of Amine Using the Green Hydrogen Borrowing Methodology
作者:Murat Kaloğlu、Nevin Gürbüz、David Sémeril、İsmail Özdemir
DOI:10.1002/ejic.201701479
日期:2018.3.14
complexes [dichloro‐1‐[2‐(2‐ethoxyphenoxy)ethyl]‐3‐(3,5‐dimethylbenzyl)benzimidazol‐2‐ylidene}(p‐cymene) ruthenium(II)] has been established by single‐crystal X‐ray diffraction study, which revealed that the ruthenium atom adopt a classical piano‐stool coordination geometry. Under the optimised conditions, these ruthenium complexes were found to be efficient catalysts for N‐alkylation of aniline with arylmethyl
六个钌(II)配合物与一般分子式将[RuCl 2(NHC)(η 6 - p -cymene)](NHC = N-杂环卡宾)由转移金属化方法从将[RuCl合成2(η 6 - p - cymene)2和银(I)-NHC络合物。所有络合物均已通过分析和光谱方法(FT-IR,元素分析以及1 H和13 C NMR)进行了全面表征。钌配合物之一的固态结构[二氯-1- [2-(2-乙氧基苯氧基)乙基] -3-(3,5-二甲基苄基)苯并咪唑-2-亚基}(p[cymene)ruthenium(II)]是通过单晶X射线衍射研究建立的,该研究表明,钌原子采用经典的钢琴-凳子配位几何形状。在最优化的条件下,发现这些钌配合物是使用氢借用策略将苯胺与芳基甲醇进行N-烷基化的有效催化剂,这对于制备N-烷基化的胺是一种具有成本效益且对环境有吸引力的反应。