Results 21 to 30 of about 4,566,251 (289)

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

The catalytic performance of Ru–NHC alkylidene complexes: PCy3 versus pyridine as the dissociating ligand

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, Diana Geißler, Sylvia Hauke, Oliver Kunz, Lucia Staude, Bernd Schmidt   +5 more
doaj   +1 more source

The cross-metathesis of methyl oleate with cis-2-butene-1,4-diyl diacetate and the influence of protecting groups

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

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

Catalysis 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, Andrew S. Weller, A. John Blacker, Philip W. Dyer   +3 more
doaj   +1 more source

Amphiphilic hydroxyalkyl cellulose derivatives for amorphous solid dispersion prepared by olefin cross-metathesis

, 2016
Olefin cross-metathesis (CM) has enabled design and synthesis of diverse, amphiphilic cellulose ether derivatives (e.g. of ethyl and methyl cellulose).
Yifan Dong, Laura I. Mosquera-Giraldo, Jacob P. Troutman, Brittny Skogstad, Lynne S. Taylor, Kevin J. Edgar   +5 more
openalex   +3 more sources

Synthesis of Tetrasubstituted Alkenes via Metathesis

Molecules, 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

Halide exchanged Hoveyda-type complexes in olefin metathesis

Beilstein 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, César A. Urbina-Blanco, Mudassar Abbas, Jörg H. Albering, Robert Saf, Steven P. Nolan, Christian Slugovc   +6 more
doaj   +1 more source

Hoveyda–Grubbs catalysts with an N→Ru coordinate bond in a six-membered ring. Synthesis of stable, industrially scalable, highly efficient ruthenium metathesis catalysts and 2-vinylbenzylamine ligands as their precursors

Beilstein Journal of Organic Chemistry, 2019
A novel and efficient approach to the synthesis of 2-vinylbenzylamines is reported. This involves obtaining 2-vinylbenzylamine ligands from tetrahydroisoquinoline by alkylation and reduction followed by the Hofmann cleavage.
Kirill B. Polyanskii, Kseniia A. Alekseeva, Pavel V. Raspertov, Pavel A. Kumandin, Eugeniya V. Nikitina, Atash V. Gurbanov, Fedor I. Zubkov   +6 more
doaj   +1 more source

A reação de metátese de olefinas: reorganização e ciclização de compostos orgânicos The olefin metathesis reaction: reorganization and ciclization of organic compounds

Química Nova, 2005
The olefin metathesis reaction allows the exchange of complex alkyl units between two olefins, with the formation of a new olefinic link and a sub-product olefin usually ethylene.
Daniel Frederico, Ursula Brocksom, Timothy John Brocksom   +2 more
doaj   +1 more source

Genetic Incorporation of Olefin Cross-Metathesis Reaction Tags for Protein Modification.

Journal of the American Chemical Society, 2018
Olefin cross-metathesis (CM) is a viable reaction for the modification of alkene-containing proteins. Although allyl sulfide or selenide side-chain motifs in proteins can critically enhance the rate of CM reactions, no efficient method for their site ...
Bhaskar Bhushan, Yuya A. Lin, M. Bak, A. Phanumartwiwath, Nan Yang, Matthew K. Bilyard, Tomonari Tanaka, Kieran L Hudson, L. Lercher, M. Stegmann, S. Mohammed, B. G. Davis   +11 more
semanticscholar   +1 more source