报道了以环状(氨基)(桶烯)卡宾(即CABCs)作为配体合成钌配合物。这些新配合物以中等至良好的产率分离,在 110 °C 的几天内表现出令人印象深刻的热稳定性。在各种闭环复分解(RCM)、大环-RCM、闭环烯炔复分解(RCEYM)、交叉复分解(CM)和开环交叉复分解(ROCM)反应中均表现出良好的催化性能。
Towards Long-Living Metathesis Catalysts by Tuning the N-Heterocyclic Carbene (NHC) Ligand on Trifluoroacetamide-Activated Boomerang Ru Complexes
作者:Hervé Clavier、Fréderic Caijo、Etienne Borré、Diane Rix、Fabien Boeda、Steven P. Nolan、Marc Mauduit
DOI:10.1002/ejoc.200900407
日期:2009.9
trifluoromethylamido-containing “boomerang” precatalysts bearing various N-heterocycliccarbene (NHC) ligands are reported. Comparative kinetic and stability studies show the significant effect of the NHC on the catalyst reaction profile. An investigation of the reaction scope for diverse metathesis transformations has allowed us to establish the influence of the NHC on catalyst activity, especially as a