The Influence of Phosphane Ligands on the Versatility of Ruthenium-Indenylidene Complexes in Metathesis
作者:Julie Broggi、César A. Urbina-Blanco、Hervé Clavier、Anita Leitgeb、Christian Slugovc、Alexandra M. Z. Slawin、Steven P. Nolan
DOI:10.1002/chem.201000659
日期:——
study dealing with the effect of phosphane fine‐tuning in ruthenium–indenylidene catalysts was performed. Challenged to establish how the electronic properties of para‐substituted phosphane ligands translate into catalyst activity, the versatile behaviour of these new ruthenium–indenylidenecomplexes was investigated for a number of metathesis reactions.
Phosphites as ligands in ruthenium-benzylidene catalysts for olefin metathesis
作者:Thibault E. Schmid、Xavier Bantreil、Cécilia A. Citadelle、Alexandra M. Z. Slawin、Catherine S. J. Cazin
DOI:10.1039/c1cc10825e
日期:——
The use of phosphites in second generation, ruthenium-based olefin metathesis pre-catalysts leads to an improvement in catalyst stability and activity at low catalyst loadings.
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
PQS-2: ring-closing- and cross-metathesis reactions on lipophilic substrates; in water only at room temperature, with in-flask catalyst recycling
作者:Bruce H. Lipshutz、Subir Ghorai
DOI:10.1016/j.tet.2009.11.010
日期:2010.1
(PQS-2) of the recently introduced PQS is described. It forms catalytic nanomicellar reactors in water that provide the medium for highly reactive Ru carbene catalysts to effect both ring closing metathesis to trisubstituted olefins and cross-metathesis reactions at roomtemperature. The catalyst can be recycled without removal from the reaction vessel.
Poly(fluoroalkyl acrylate)-Bound Ruthenium Carbene Complex: A Fluorous and Recyclable Catalyst for Ring-Closing Olefin Metathesis
作者:Qingwei Yao、Yiliang Zhang
DOI:10.1021/ja037394p
日期:2004.1.1
The synthesis of a fluorous olefin metathesiscatalyst derived from the Grubbs second-generation ruthenium carbene complex is described. The air stable fluorous polymer-bound ruthenium carbene complex 1 shows high reactivity in effecting the ring-closingmetathesis of a broad spectrum of diene and enyne substrates leading to the formation of di-, tri-, and tetrasubstituted cyclic olefins in minimally