Results 31 to 40 of about 101,444 (317)
European Journal of Inorganic Chemistry, 2009 The N-heterocyclic carbenes (NHC) now hold a preferred-ligand status in organic and organometallic chemistry. Their role in catalysis continues to grow. When the editorial staff at the Beilstein Journal of Organic Chemistry contacted me to act as a guest editor for the thematic series “N-Heterocyclic carbenes”, I was more than happy to accept what ...
openaire +3 more sources
The fluorine-NHC gauche effect: a structural and computational study [PDF]
, 2013 Herein, we report the synthesis and X-ray structural analysis of a collection of fluorinated metal N-heterocyclic carbenes (Ag, Au, Pd, Rh, Ir) and their precursor salts.
Gilmour, R. +4 more
core +1 more source
Visualizing Carbene Equilibria [PDF]
Photochemistry and Photobiology, 2013 AbstractReviewed herein are equilibria between halocarbenes and halocarbanions, carbenes and carbene complexes and carbenes and O‐ylides. The transient species were visualized by laser flash photolysis coupled with UV–Visible spectroscopy. This methodology enabled the determination of equilibrium constants and the extraction of associated thermodynamic
Robert A, Moss +3 more
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Trakya University Journal of Natural Sciences, 2017 3-(2-hydroxyethyl)-1-(3-aminopropyl)-1H-imidazole-3-ium bromide as an N-heterocyclic carbene salt was synthesized by the reaction of 3-(1H-imidazole-1-yl )propane -1-amine with 2-bromoethanol.
Gühergül Uluçam
doaj +1 more source
Inorganics, 2017 A series of novel N-heterocyclic carbene coinage metal complexes containing a naphthalimide (NI) chromophore has been prepared and fully characterized. Two types of molecules are described those where the NI unit is directly attached to the carbene unit ...
Pierre-Henri Lanoë +4 more
doaj +1 more source
Structure and Reactivity of Half-Sandwich Rh(+3) and Ir(+3) Carbene Complexes. Catalytic Metathesis of Azobenzene Derivatives [PDF]
, 2018 Traditional rhodium carbene chemistry relies on the controlled decomposition of diazo derivatives with [Rh2(OAc)4] or related dinuclear Rh(+2) complexes, whereas the use of other rhodium sources is much less developed.
Farès, C. +5 more
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Vinylic Addition Polynorbornene in Catalysis [PDF]
, 2019 Vinylic addition polynorbornenes (VA-PNB) result from the insertion polymerization of norbornene or specific norbornene derivatives catalyzed by transition metal com- plexes. The VA-PNB skeleton is completely aliphatic and keeps the bicyclic structure of
Albéniz Jiménez, Ana Carmen +1 more
core +2 more sources
Biocatalytic Regioselective C‐Formylation of Resorcinol Derivatives
Angewandte Chemie, EarlyView.An acyltransferase from Chromobacterium sphagni (CsATase) was identified that catalyzes the regioselective formylation of resorcinol substrates. The formylation of substituted resorcinol derivatives yielded mono‐formylated products with up to 99% conversion and up to 74% isolated yield.
Lilla Gal +6 more
wiley +2 more sources
Carbene Transfer Reactions Catalysed by Dyes of the Metalloporphyrin Group
Molecules, 2018 Carbene transfer reactions are very important transformations in organic synthesis, allowing the generation of structurally challenging products by catalysed cyclopropanation, cyclopropenation, carbene C-H, N-H, O-H, S-H, and Si-H insertion, and ...
Mário M. Q. Simões +8 more
doaj +1 more source
Variable coordination of amine functionalised N-heterocyclic carbene ligands to Ru, Rh and Rr: C-H and N-H activation and catalytic transfer hydrogenation [PDF]
, 2011 Chelating amine and amido complexes of late transition metals are highly valuable bifunctional catalysts in organic synthesis, but complexes of bidentate amine–NHC and amido–NHC ligands are scarce.
Arita +49 more
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