Department of Chemistry, North-West University, Mafikeng, South Africa.
Int J Mol Sci. 2009 Nov 18;10(11):5020-30. doi: 10.3390/ijms10115020.
The efficacy of [bmim][X] ionic liquids (ILs) (X = PF(6) (-), BF(4) (-) and NTf(2) (-)) as reaction media for methyl oleate metathesis was compared with that of conventional organic solvents (PhCl, PhMe, DCM and DCE) using the well-defined first and second generation Grubbs precatalysts, RuCl(2)(PCy(3))(L)(=CHPh) (L = PCy(3) or H(2)IMes). Best catalytic performance, with excellent selectivity (>98%) at moderate reaction temperatures, was achieved in [bmim][X] ILs compared to conventional solvents. The effects of anion, reaction temperature, solvent polarity, solvent viscosity, and ligand-anion interaction on the reaction are also addressed.
[bmim][X] 离子液体（ILs）（X = PF(6) (-), BF(4) (-) 和 NTf(2) (-)）作为用于油酸甲酯复分解反应的反应介质的功效与传统有机溶剂（PhCl、PhMe、DCM 和 DCE）进行了比较，使用了明确的第一代和第二代 Grubbs 前催化剂，RuCl(2)(PCy(3))(L)(=CHPh)（L = PCy(3) 或 H(2)IMes）。与传统溶剂相比，在 [bmim][X] ILs 中实现了最佳的催化性能，在中等反应温度下具有优异的选择性（>98%）。还讨论了阴离子、反应温度、溶剂极性、溶剂粘度以及配体-阴离子相互作用对反应的影响。
