Direct Amide Synthesis from Alcohols and Amines by Phosphine-Free Ruthenium Catalyst Systems
作者:Subhash Chandra Ghosh、Senthilkumar Muthaiah、Yao Zhang、Xiangya Xu、Soon Hyeok Hong
DOI:10.1002/adsc.200900482
日期:2009.11
synthesized directly from alcohols and amines in high yields using an in situ generated catalyst from easily available ruthenium complexes such as the (p-cymene)ruthenium dichloride dimer, [Ru(p-cymeme)Cl2]2, or the (benzene)ruthenium dichloride dimer, [Ru(benzene)Cl2]2, an N-heterocyclic carbene (NHC) ligand, and a nitrogen containing L-type ligand such as acetonitrile. The phosphine-free catalyst systems showed
使用原位生成的催化剂,由易得的钌配合物(如(p- cymene)二氯化钌二聚体,[Ru(p- cymeme)Cl 2 ] 2或(苯))直接从醇和胺中高产率直接合成酰胺。)二氯化钌二聚体,[Ru(苯)Cl 2 ] 2,N-杂环卡宾(NHC)配体和含氮L型配体(如乙腈)。与以前的基于膦的催化体系相比,无膦的催化剂体系表现出改善的或可比的活性。在原位从的[Ru(苯)氯生成催化剂2 ] 2,NHC配体和乙腈对与环状仲胺(如哌啶和吗啉)的反应具有出色的活性。