Half-sandwich ruthenium-carbene catalysts: Synthesis, characterization, and catalytic application in the N-alkylation of amines with alcohols
作者:Murat Kaloğlu
DOI:10.1016/j.ica.2019.119163
日期:2019.12
the synthesis and characterization of new half-sandwich ruthenium complexes containing oxygen functionalised N-aryl and N-alkyl benzimidazol-2-ylidene ligands have been reported. All ruthenium complexes were tested as catalysts for a wide range of substrates in the N-alkylation of secondary cyclic amines such as pyrrolidine and piperidine, and 4-methylaniline which was a primary aromaticamine with
Ruthenium(II)‐(Arene)‐N‐Heterocyclic Carbene Complexes: Efficient and Selective Catalysts for the
<i>N</i>
‐Alkylation of Aromatic Amines with Alcohols
characterized by 1 H NMR, 13 C NMR and FT-IR spectroscopy techniques. The catalytic activity of the ruthenium complexes has been evaluated with respect to the mono-N-alkylation reactions of aromatic amines with various alcohol derivatives under solvent-free conditions at 120 o C using the borrowing hydrogen strategy.
一系列不对称的 1,3-二取代苯并咪唑氯化物被合成为 N-杂环卡宾 (NHC) 前体。这些化合物用于合成 [RuCl2(芳烃)(NHC)] 类型的新型钌 (II) 配合物,(芳烃 = η 6-p-伞花烃)。所有化合物的结构均通过 1 H NMR、 13 C NMR 和 FT-IR 光谱技术表征。使用借氢策略,在无溶剂条件下,在 120 o C 下,对芳香胺与各种醇衍生物的单-N-烷基化反应评估了钌配合物的催化活性。