Results 11 to 20 of about 26,308 (247)

Ruthenium-Based Heterocyclic Carbene-Coordinated Olefin Metathesis Catalysts [PDF]

open access: yesChemical Reviews, 2010
The fascinating story of olefin (or alkene) metathesis (eq 1) began almost five decades ago, when Anderson and Merckling reported the first carbon-carbon double-bond rearrangement reaction in the titanium-catalyzed polymerization of norbornene.
Grubbs, Robert H.   +1 more
core   +3 more sources

Straightforward Synthesis of α,β-Unsaturated Thioesters via Ruthenium-Catalyzed Olefin Cross-Metathesis with Thioacrylate [PDF]

open access: yes, 2008
The cross-metathesis reaction of S-ethyl thioacrylate with a variety of olefins is effectively catalyzed by using a ruthenium benzylidene olefin metathesis catalyst.
Feringa, Ben L.,   +2 more
core   +1 more source

Alkene Metathesis Catalysis: A Key for Transformations of Unsaturated Plant Oils and Renewable Derivatives

open access: yesOil & Gas Science and Technology, 2016
This account presents the importance of ruthenium-catalysed alkene cross-metathesis for the catalytic transformations of biomass derivatives into useful intermediates, especially those developed by the authors in the Rennes (France) catalysis team in ...
Dixneuf Pierre H.   +2 more
doaj   +1 more source

Preparation and Reaction Chemistry of Novel Silicon-Substituted 1,3-Dienes

open access: yesMolecules, 2015
2-Silicon-substituted 1,3-dienes containing non transferrable groups known to promote transmetallation were prepared by Grignard chemistry and enyne metathesis.
Partha P. Choudhury, Mark E. Welker
doaj   +1 more source

Z-Selective Homodimerization of Terminal Olefins with a Ruthenium Metathesis Catalyst [PDF]

open access: yes, 2011
The cross-metathesis of terminal olefins using a novel ruthenium catalyst results in excellent selectivity for the Z-olefin homodimer. The reaction was found to tolerate a large number of functional groups, solvents, and temperatures while maintaining ...
Endo, Koji   +3 more
core   +2 more sources

The catalytic performance of Ru–NHC alkylidene complexes: PCy3 versus pyridine as the dissociating ligand

open access: yesBeilstein Journal of Organic Chemistry, 2010
The catalytic performance of NHC-ligated Ru-indenylidene or benzylidene complexes bearing a tricyclohexylphosphine or a pyridine ligand in ring closing metathesis (RCM), cross metathesis, and ring closing enyne metathesis (RCEYM) reactions is compared ...
Stefan Krehl   +5 more
doaj   +1 more source

Cross metathesis of bio-sourced fatty nitriles with acrylonitrile. [PDF]

open access: yes, 2015
International audienceWe report the cross metathesis of two olefinic partners contg. different types of nitrile functionality. Thus, cross metathesis of fatty nitriles with acrylonitrile have been achieved with olefin metathesis ruthenium catalysts.
Bidange, Johan   +4 more
core   +3 more sources

Ruthenium Olefin Metathesis Catalysts Bearing an N-Fluorophenyl-N-Mesityl-Substituted Unsymmetrical N-Heterocyclic Carbene [PDF]

open access: yes, 2007
Two new ruthenium-based olefin metathesis catalysts, each bearing an unsymmetrical N-heterocyclic carbene ligand, have been synthesized and fully characterized.
Grubbs, Robert H.   +1 more
core   +1 more source

The cross-metathesis of methyl oleate with cis-2-butene-1,4-diyl diacetate and the influence of protecting groups

open access: yesBeilstein Journal of Organic Chemistry, 2011
Background: α,ω-Difunctional substrates are useful intermediates for polymer synthesis. An attractive, sustainable and selective (but as yet unused) method in the chemical industry is the oleochemical cross-metathesis with preferably symmetric ...
Arno Behr, Jessica Pérez Gomes
doaj   +1 more source

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