Results 111 to 120 of about 61,363 (222)

Hydrazine- and Diazene-Catalyzed Olefin Metathesis Reactions [PDF]

open access: yes
219 pagesThe development of olefin metathesis has revolutionized the fields of organic and polymer chemistry. However, its dependence on rare and expensive transition metal catalysts raises concerns regarding long-term sustainability and limits its use ...
Kellner-Rogers, Julian
core   +1 more source

Ammonium-tagged ruthenium-based catalysts for olefin metathesis in aqueous media under ultrasound and microwave irradiation

open access: yesBeilstein Journal of Organic Chemistry, 2019
The influence of microwave and ultrasonic irradiation on the performance of ammonium-tagged Ru-based catalysts in olefin metathesis transformations in aqueous media was studied.
Łukasz Gułajski   +5 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

open access: yesQuímica 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   +2 more
doaj   +1 more source

Comparing Ru and Fe-catalyzed olefin metathesis

open access: yes, 2014
Density functional theory calculations have been used to explore the potential of Fe-based complexes with an N-heterocyclic carbene ligand, as olefin metathesis catalysts.
Vummaleti, Sai Vikrama Chaitanya   +5 more
core   +1 more source

Construction of quaternary stereocenters via Ru-catalyzed asymmetric ring-closing metathesis

open access: yesNature Communications
Asymmetric olefin metathesis, which forms C = C double bonds while simultaneously inducing chirality in molecules, is highly valuable in chemical synthesis.
Shaofeng Li   +9 more
doaj   +1 more source

Olefin metathesis in multiblock copolymer synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2019
Multiblock copolymers constitute a basis for an emerging class of nanomaterials that combine various functional properties with durability and enhanced mechanical characteristics. Our mini-review addresses synthetic approaches to the design of multiblock
Maria L. Gringolts   +3 more
doaj   +1 more source

Chelation‐Assisted Metal‐Catalyzed Ligation and Cleavage Reactions for Chemical Biology

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 39, 22 October 2026.
Chelation‐assisted transition metal catalysis has emerged as a promising complement to bioorthogonal click chemistry for studying biological processes. By pre‐organizing catalytic metal centers, designed coordinating substrates enhance reactivity and biocompatibility, enabling site‐selective ligation and decaging reactions in complex biological media ...
Emilie Plantiveau   +3 more
wiley   +1 more source

Highly Active Water-Soluble Olefin Metathesis Catalyst

open access: yes, 2016
A novel water-soluble ruthenium olefin metathesis catalyst supported by a poly(ethylene glycol) conjugated saturated 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene ligand is reported.
Soon Hyeok Hong (1373670)   +1 more
core   +1 more source

Cationic Tungsten(VI) Penta-Methyl Complex: Synthesis, Characterization and its Application in Olefin Metathesis Reaction

open access: yesOil & Gas Science and Technology, 2016
Tungsten-hexa-methyl readily reacts with B(C6F5)3 in dichloromethane and generates the corresponding well-defined cationic tungsten-penta-methyl complex which was identified precisely by 1H NMR, 13C NMR, 1H-13C NMR correlation spectroscopy.
Dey Raju   +7 more
doaj   +1 more source

Carbonyl–olefin metathesis: a key review

open access: yes, 2018
In organic chemistry, olefin–olefin metathesis of two unsaturated substrates for the formation of a new carbon–carbon bond has been widely explored and applied.
Revathi Lekkala   +5 more
core   +1 more source

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