Results 1 to 10 of about 10,925 (100)

Eff ect of the MoO3/Al2O3 catalyst fl uorination on the propylene metathesis reaction [PDF]

open access: yesИзвестия 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

open access: yesMetathesis: 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

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

Efficient catalytic alkyne metathesis with a fluoroalkoxy-supported ditungsten(III) complex

open access: yesBeilstein Journal of Organic Chemistry, 2018
The molybdenum and tungsten complexes M2(OR)6 (Mo2F6, M = Mo, R = C(CF3)2Me; W2F3, M = W, R = OC(CF3)Me2) were synthesized as bimetallic congeners of the highly active alkyne metathesis catalysts [MesC≡M{OC(CF3)nMe3−n}] (MoF6, M = Mo, n = 2; WF3, M = W ...
Henrike Ehrhorn   +3 more
doaj   +1 more source

Halide exchanged Hoveyda-type complexes in olefin metathesis

open access: yesBeilstein Journal of Organic Chemistry, 2010
The aims of this contribution are to present a straightforward synthesis of 2nd generation Hoveyda-type olefin metathesis catalysts bearing bromo and iodo ligands, and to disclose the subtle influence of the different anionic co-ligands on the catalytic ...
Julia Wappel   +6 more
doaj   +1 more source

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

Olefin metathesis in nano-sized systems

open access: yesBeilstein Journal of Organic Chemistry, 2011
The interplay between olefin metathesis and dendrimers and other nano systems is addressed in this mini review mostly based on the authors’ own contributions over the last decade.
Didier Astruc   +7 more
doaj   +1 more source

Synthesis of Tetrasubstituted Alkenes via Metathesis

open access: yesMolecules, 2012
Fully substituted olefin generation via metathesis is presented. Catalyst development, optimization of reaction conditions and substrate screening are included.
Seung-Mann Paek
doaj   +1 more source

The allylic chalcogen effect in olefin metathesis

open access: yesBeilstein Journal of Organic Chemistry, 2010
Olefin metathesis has emerged as a powerful tool in organic synthesis. The activating effect of an allylic hydroxy group in metathesis has been known for more than 10 years, and many organic chemists have taken advantage of this positive influence for ...
Yuya A. Lin, Benjamin G. Davis
doaj   +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

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