Results 11 to 20 of about 4,073,254 (239)

Halide exchanged Hoveyda-type complexes in olefin metathesis [PDF]

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   +2 more sources

Synergistic approach to polycycles through Suzuki–Miyaura cross coupling and metathesis as key steps

open access: yesBeilstein Journal of Organic Chemistry, 2018
This account provides an overview of recent work, including our own contribution dealing with Suzuki–Miyaura cross coupling in combination with metathesis (or vice-versa). Several cyclophanes, polycycles, macrocycles, spirocycles, stilbenes, biaryls, and
Sambasivarao Kotha   +2 more
doaj   +2 more sources

Cross-Metathesis of an Iron Carbene with Diazenes

open access: yesJournal of the American Chemical Society
Olefin metathesis is one of the most versatile reactions in a synthetic chemist’s toolbox. Metathesis of C=X (X = O, N,(=NR)2) substrates has also been developed; however, the simple cross-metathesis of diazenes and olefins remains unrealized, in part due to the lack of mechanistic information about deactivation pathways for traditional olefin cross ...
Zachary S. Lincoln, Vlad M. Iluc
openaire   +3 more sources

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

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

New Approaches to Olefin Cross-Metathesis

open access: yes, 2016
New methodology for the selective cross-metathesis (CM) of terminal olefins employing ruthenium benzylidene 1 is described. CM with symmetric internal olefins was found to provide a useful means for homologating terminal olefins to protected allylic ...
Helen E. Blackwell (1247094)   +5 more
core   +2 more sources

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

Olefin cross metathesis and ring-closing metathesis in polymer chemistry [PDF]

open access: yesPolymer Chemistry, 2017
The use of olefin cross metathesis in preparing functional polymers, through either pre-functionalisation of monomers or post-polymerisation functionalisation is growing in both scope and breadth, as discussed in this review article.
Fern Sinclair   +3 more
openaire   +4 more sources

Elongation of β-hydroxyenones by cross-metathesis

open access: yesTetrahedron Letters, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Silva, F, Gouverneur, V
openaire   +1 more source

Conversion of butanol to propene in flow: A triple dehydration, isomerisation and metathesis cascade

open access: yesCatalysis Communications, 2022
A combined three-step flow cascade conversion of n-butanol to propene is demonstrated. Zeolite H-ZSM-5 gives high conversion in the initial n-butanol dehydration step (98%).
Yiping Shi   +3 more
doaj   +1 more source

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