Results 1 to 10 of about 66,905 (286)
Ruthenium-Based Heterocyclic Carbene-Coordinated Olefin Metathesis Catalysts [PDF]
Chemical 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.
Georgios C Vougioukalakis, Robert Grubbs
exaly +3 more sources
Organocatalyzed Fluoride Metathesis [PDF]
Organic Letters, 2020 A new organocatalyzed fluoride metathesis reaction between fluoroarenes and carbonyl derivatives is reported. The reaction exchanges fluoride (F–) and alternate nucleophiles (OAc–, CO2R–, SR–, Cl–, CN–, NCS–). The approach provides a conceptually novel route to manipulate the fluorine content of organic molecules.
Daniel Mulryan +2 more
openaire +4 more sources
Eff ect of the MoO3/Al2O3 catalyst fl uorination on the propylene metathesis reaction [PDF]
Известия Саратовского университета. Новая серия: Серия Химия. Биология. Экология, 2022 In the course of this work, fl uorinated catalysts MoO3 /Al2 O3 -F for the olefi ns metathesis have been synthesized. The materials have been characterized by various physicochemical methods and tested in the propylene metathesis reaction.
Nikiforov, Alexander I. +4 more
doaj +1 more source
A Child’s Language Acquisition: The Metathesis Phenomena
Metathesis: Journal of English Language, Literature, and Teaching, 2019 Metathesis is one of the unique phenomena among the children during their language acquisition phase. This research aims at investigating the metathesis phenomena happens in a child.
khafidhoh khafidhoh
doaj +1 more source
Facile Synthesis of Effcient and Selective Ruthenium Olefin Metathesis Catalysts with Sulfonate and Phosphate Ligands [PDF]
, 2010 A series of novel, air-stable ruthenium NHC catalysts with sulfonate and phosphate anions have been prepared easily in one pot at high yields using commercially available precursors.
Grubbs, Robert H., Teo, Peili
core +1 more source
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.
core +2 more sources
Chelated Ruthenium Catalysts for Z-Selective Olefin Metathesis [PDF]
, 2011 We report the development of ruthenium-based metathesis catalysts with chelating N-heterocyclic carbene (NHC) ligands that catalyze highly Z-selective olefin metathesis.
Endo, Koji, Grubbs, Robert H.
core +3 more sources
Enantioselective Synthesis of 5-epi-Citreoviral Using Ruthenium-Catalyzed Asymmetric Ring-Closing Metathesis [PDF]
, 2009 Chiral ruthenium olefin metathesis catalysts can perform asymmetric ring-closing reactions in ≥90% ee with low catalyst loadings. To illustrate the practicality of these reactions and the products they form, an enantioselective total synthesis of 5-epi ...
Funk, Timothy W.
core +2 more sources
Natural Product Communications, 2017 Metathesis reactions is firmly established as a valuable synthetic tool in organic chemistry, clearly comparable with the venerable Diels-Alder and Wittig reactions and, more recently, with the metal-catalyzed cross-coupling reactions.
Silvia Roscales, Joaquín Plumet
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
doaj +1 more source