Coordinatively Unsaturated 16-Electron Ruthenium Allenylidene Complexes: Synthetic, Structural, and Catalytic Studies
作者:Hans-Jörg Schanz、Laleh Jafarpour、Edwin D. Stevens、Steven P. Nolan
DOI:10.1021/om9906316
日期:1999.11.1
The one-pot reactions of [(p-cymene)RuCl2]2 (1) or (PPh3)4RuCl2 (2) with 2 equiv of PCy3 and 3,3-diphenylpropyn-3-ol afford the novel 16-electron ruthenium allenylidene complex (PCy3)2Cl2Ru(CCCPh2) (3) in high yields. Substitution of one PCy3 ligand in 3 for one nucleophilic carbene ligand, IMes [1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene], affords the novel complex (PCy3)(IMes)Cl2Ru(CCCPh2)
[(p- Cymene)RuCl 2 ] 2(1)或(PPh 3)4 RuCl 2(2)与2当量的PCy 3和3,3-二苯基丙炔-3-醇的一锅反应得到了新颖的16 -电子钌亚烯基络合物(PCy 3)2 Cl 2 Ru(C C CPh 2)(3)高产率。一个PCy 3配体在3中取代一个亲核卡宾配体IMes [1,3-双(2,4,6-三甲基苯基)咪唑-2-亚基],得到了新型络合物(PCy3)(IMes)Cl 2 Ru(C C CPh 2)(4)。进行配合物3和4的单晶X射线结构分析。研究了配合物3和4的热稳定性,并测试了它们促进各种底物闭环复分解(RCM)的催化活性。