Results 11 to 20 of about 4,618,245 (281)

Cross metathesis of unsaturated epoxides for the synthesis of polyfunctional building blocks [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2015
The cross metathesis of 1,2-epoxy-5-hexene (1) with methyl acrylate and acrylonitrile was investigated as an entry to the synthesis of polyfunctional compounds.
Meriem K. Abderrezak   +6 more
doaj   +2 more sources

Modification of Polyhedral Oligomeric Silsesquioxanes (POSS) Molecules by Ruthenium Catalyzed Cross Metathesis [PDF]

open access: yesMolecules, 2018
The scope of ruthenium (Ru)-catalyzed cross metathesis (CM) of allyl-decorated polyhedral oligomeric silsesquioxanes (POSS) was explored. A variety of different commercial and non-commercial ruthenium complexes were tested to determine that the nitro ...
Justyna Czaban-Jóźwiak   +5 more
doaj   +2 more sources

Fast-Initiating, Ruthenium-based Catalysts for Improved Activity in Highly E-Selective Cross Metathesis [PDF]

open access: yesJournal of the American Chemical Society, 2017
Ruthenium-based olefin metathesis catalysts bearing dithiolate ligands have been recently employed to generate olefins with high E-selectivity (>99% E) but have been limited by low to moderate yields.
Ahmed, Tonia S., Grubbs, Robert H.
core   +3 more sources

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

Direct synthesis of Z-alkenyl halides through catalytic cross-metathesis. [PDF]

open access: yesNature, 2016
Olefin metathesis has had a large impact on modern organic chemistry, but important shortcomings remain: for example, the lack of efficient processes that can be used to generate acyclic alkenyl halides.
Koh MJ   +4 more
europepmc   +2 more sources

Synthesis of a tyrosinase inhibitor by consecutive ethenolysis and cross-metathesis of crude cashew nutshell liquid [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2018
A convenient and sustainable three-step synthesis of the tyrosinase inhibitor 2-hydroxy-6-tridecylbenzoic acid was developed that starts directly from the anacardic acid component of natural cashew nutshell liquid (CNSL).
Jacqueline Pollini   +2 more
doaj   +2 more sources

Cross-metathesis of polynorbornene with polyoctenamer: a kinetic study [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2015
The cross-metathesis of polynorbornene and polyoctenamer in d-chloroform mediated by the 1st generation Grubbs’ catalyst Cl2(PCy3)2Ru=CHPh is studied by monitoring the kinetics of carbene transformation and evolution of the dyad composition of polymer ...
Yulia I. Denisova   +7 more
doaj   +2 more sources

A Stereoselective Enyne Cross Metathesis. [PDF]

open access: yesChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Lee, HY Lee, Hee Yoon   +2 more
openaire   +3 more sources

On the stereoselectivity of the cross metathesis of olefins catalyzed by a second-generation catalyst

open access: yesCatalysis Communications, 2022
Stereoselective control of the cross metathesis of olefins is highly desired in synthetic procedures. In this work, guided by thermodynamic and kinetic descriptors calculated using density functional theory methods, we performed an exhaustive exploration
J. Pablo Martínez, Bartosz Trzaskowski
doaj   +1 more source

Facile Synthesis of Effcient and Selective Ruthenium Olefin Metathesis Catalysts with Sulfonate and Phosphate Ligands [PDF]

open access: yes, 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

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