Results 41 to 50 of about 10,092 (232)

Ruthenium-based olefin metathesis catalysts with monodentate unsymmetrical NHC ligands

open access: yesBeilstein Journal of Organic Chemistry, 2018
An overview on the catalytic properties of ruthenium complexes for olefin metathesis bearing monodentate unsymmetrical N-heterocyclic diaminocarbene ligands is provided. The non-symmetric nature of these NHC architectures strongly influences activity and
Veronica Paradiso   +2 more
doaj   +1 more source

Catalytic Olefin-Imine Metathesis: Cobalt-Enabled Amidine Olefination with Enaminones

open access: yes, 2023
Organic metathesis reactions, the transposition/redistribution of molecular fragments between two chemical entities, allow expedient assembly of diverse molecular skeletons and appendages through the merger of whole-piece building blocks.
Jin, Zhu   +3 more
core   +1 more source

Dimethyl 9-Octadecenedioate and 9-Oktadecene from Methyl Oleate Via a Ruthenium-Catalyzed Homo Olefin Metathesis Reaction

open access: yesInternational Journal of Technology, 2017
Oleic acid, one of the major components of palm oil, has attracted much interest in modern oleochemistry. The internal olefin group in oleic acid is a useful functional group in the transformation of a fatty acid to other functional chemicals and ...
Robby Roswanda   +2 more
doaj   +1 more source

Desymmetrization of 7-azabicycloalkenes by tandem olefin metathesis for the preparation of natural product scaffolds

open access: yesBeilstein Journal of Organic Chemistry, 2007
BackgroundTandem olefin metathesis sequences are known to be versatile for the generation of natural product scaffolds and have also been used for ring opening of strained carbo- and heterocycles.
Wolfgang Maison   +2 more
doaj   +1 more source

Aqueous olefin metathesis: recent developments and applications

open access: yesBeilstein Journal of Organic Chemistry, 2019
Olefin metathesis is one of the most powerful C–C double-bond-forming reactions. Metathesis reactions have had a tremendous impact in organic synthesis, enabling a variety of applications in polymer chemistry, drug discovery and chemical biology ...
Valerio Sabatino, Thomas R. Ward
doaj   +1 more source

A study of the ring opening metathesis polymerization of polycyclic aromatic monomers and cyclopentenes with well defined initiators [PDF]

open access: yes, 1994
This thesis describes studies into the ring opening metathesis polymerisation (ROMP) of polycyclic aromatic monomers and cyclopentenes. Chapter 1 reviews general aspects of ring opening metathesis polymerisation of relevance to the themes of this thesis.
Sugawara, Keiji
core  

Diazene-Catalyzed Oxidative Alkyl Halide-Olefin Metathesis

open access: yes, 2023
The first platform for oxidative alkyl halide-olefin metathesis is described. The procedure employs diazenes as catalysts, which effect cyclization of alkenyl alkyl halides to generate cyclic olefins. Mechanistically, the diazene catalyst is converted to
Tristan, Lambert   +2 more
core   +1 more source

Controlled molecular architectures via ring opening metathesis polymerisation [PDF]

open access: yes, 1995
This thesis describes studies into the ring opening metathesis polymerisation (ROMP) of some monocyclic alkenes, the living polymerisation of cyclopentene and the preparation of novel block copolymers and novel polyethylene architectures using having ...
Dounis, Panagiotis
core  

Ruthenium indenylidene "1st generation" olefin metathesis catalysts containing triisopropyl phosphite

open access: yes, 2015
The authors gratefully acknowledge the Royal Society (University Research Fellowship to CSJC) and the EC (CP-FP 211468-2 EUMET) for funding.The reaction of triisopropyl phosphite with phosphine-based indenylidene pre-catalysts affords “1st generation ...
Cazin, Catherine   +9 more
core   +1 more source

A New Variant of Fused Cyclic Ether Synthesis Based on Ireland-Claisen Rearrangement and RCM

open access: yesNatural Product Communications, 2013
A new variant of fused cyclic ether synthesis based on Ireland-Claisen rearrangement and ring-closing olefin metathesis (RCM) was developed. The Ireland-Claisen rearrangement and ring-closing olefin metathesis (RCM) was developed.
Daisuke Domon   +5 more
doaj   +1 more source

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