Results 21 to 30 of about 4,618,245 (281)
Ruthenium Olefin Metathesis Catalysts Bearing Carbohydrate-Based N-Heterocyclic Carbenes [PDF]
, 2010 Ru-based olefin metathesis catalysts containing carbohydrate-derived NHCs from glucose and galactose were synthesized and characterized by NMR spectroscopy. 2D-NMR spectroscopy revealed the presence of Ru−C (benzylidene) rotamers at room temperature, and
Grubbs, Robert H., Keitz, Benjamin K.
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Z-Selective Homodimerization of Terminal Olefins with a Ruthenium Metathesis Catalyst [PDF]
, 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
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One-pot multicomponent synthesis of 2,3-dihydropyrans: new access to furanose–pyranose 1,3-C–C-linked-disaccharides [PDF]
, 2009 An efficient synthesis of 2,3-dihydropyrans starting from different terminal alkynes was developed. The 2,3-dihydropyrans were obtained in a few minutes through a microwave-assisted multicomponent enyne cross-metathesis/hetero-Diels–Alder reaction ...
Armstrong +28 more
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Oil & 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
Molecules, 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
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Application of Transition Metal Catalysis to Small Molecule Synthesis [PDF]
, 2006 Over the past decade, transition metal catalysis has developed into a new field in organic synthesis, enabling numerous synthetic transformations that were previously not feasible.
Morrill, Christie
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Beilstein 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
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Cross metathesis of bio-sourced fatty nitriles with acrylonitrile. [PDF]
, 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
Beilstein 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