N-heterocyclic
Coinage metal complexes of selenoureas derived from N-heterocyclic carbenes
... We describe the synthesis and characterisation of a series of new copper and silver complexes with selenourea ligands derived from common and readily-prepared N-heterocyclic carbenes (NHCs). The copper ...
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Light stable silver N Heterocyclic carbene catalysts for the alkynylation of ketones in air
... = N-heterocyclic carbene) systems have become catalysts of choice, presenting outstanding reactivity and ...= N,N’-bis{2,4,6-(trimethyl)phenyl} imidazol-2-ylidene) in the presence of DIPEA ...
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N-HETEROCYCLIC CARBENES: FROM DESIGN TO SYNTHESIS AND THEIR APPLICATION AS NUCLEOPHILIC CATALYSTS
... = N); and triazolium salts, which are derivatives of 1,2,4-triazoles (Y = N, Z = N) containing three nitrogen atoms in the carbene ...Although N- heterocyclic carbenes possess the ...
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Coinage Metal Silylphosphido Complexes Stabilized by N-Heterocyclic Carbene Ligands
... of N-heterocyclic carbenes to stabilize polynuclear group 11 clusters and nanoparticles prompted us to synthesize silylated NHC-metal precursors for the preparation of metal-phosphide nanoclusters that have ...
137
BIOLOGICAL ACTIVITY EVALUATION OF NOVEL N HETEROCYCLIC CARBENE PRECURSORS
... Department of Chemistry 2 , Faculty of Arts and Sciences, Inönü University, 44280 Malatya, Turkey. ABSTRACT: Five novel benzimidazolium salts were synthesized as N-heterocyclic carbene (NHC) precursors ...
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Ruthenium Complexes Bearing N-Heterocyclic Carbene (NHC) Ligands123-137
... the activity of these types of compounds in metathesis reactions can be finely tuned by appro- priate structural changes in both the N-heterocyclic carbene and the chelating iso- propoxybenzylidene ligand. ...
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Harnessing asymmetric N-heterocyclic carbene ligands to optimise SABRE hyperpolarisation
... N-heterocyclic carbenes (NHCs) are used widely as ligands in an array of chemical transformations such as hydrogenation, hydrogen transfer, hydroformylation, hydrosilylation, oxidation, isomerisation, ...
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Synthesis and characterisation of an N-heterocyclic carbene with spatially-defined steric impact
... The synthesis and co-ordination chemistry of a new ‘bulky yet flexible’ N-heterocyclic carbene (“IPaul”) is reported. This carbene has spatially-defined steric impact; steric maps show that two quadrants ...
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Nickel N-heterocyclic carbene complexes in homogeneous catalysis
... The synthesis of a variety of nickel(II) dihalide complexes of monodentate N‐ heterocyclic carbenes bearing small substituents is described in Chapter 3. These complexes were used as catalysts in the ...
179
Backbone tuning in indenylidene ruthenium complexes bearing an unsaturated N heterocyclic carbene
... of N-heterocyclic carbenes (NHC) as spectator ligands in ruthenium-mediated olefin metathesis represents one of the most important breakthroughs in this field ...
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Improved Synthesis and New Applications of N-Heterocyclic Carbenes for Catalysis.
... We successfully have developed a method for the formation of a stable, yet more reactive cyclopropanone starting material and examined its reactivity toward a variety of N-Heterocyclic carbenes. By ...
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Ruthenium Complexes Bearing N-Heterocyclic Carbene (NHC) Ligands183-188
... N-Heterocyclic carbenes (NHCs) are encoun- tered as versatile ligands in a large variety of organometallic and coordination complexes per- taining to almost all members of the platinum group metals (pgms) ...
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BIOLOGICAL ACTIVITIES OF SOME SUBSTITUTED N-HETEROCYCLIC MOLECULES
... The antifungal activity of some substituted N-heterocyclic molecules have been observed and discussed. The antifungal activity of 2-benzylamino-4-methylpyridine, 2-chloro-6-methoxypyridine and ...
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Polar organometallic strategies for regioselective C-H metallation of N-heterocyclic Carbenes
... of N-heterocyclic carbenes (NHCs) has only begun to be tapped into ...the N atoms) can finely tune their steric and electronic properties, 6 it was only in 2010 that the ...
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Electrochemical flow-reactor for expedient synthesis of copper-N-heterocyclic carbene complexes
... An electrochemical flow-cell for highly efficient and selective generation of Cu I -N-heterocyclic carbene complexes under neutral and ambient conditions is reported. The feasibility of the flow-cell is ...
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N-heterocyclic germylenes : structural characterisation of some heavy analogues of the ubiquitous N-heterocyclic carbenes
... the N-C-N bond in ...five-membered N-heterocyclic germylenes is at a low energy, making them poorly nucleophilic [13], which is supported by a second study that shows the proton affinity to be ...
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An indenide tethered N heterocyclic stannylene
... N-heterocyclic stannylenes (NHSns) are the tin analogues of N-heterocyclic carbenes (NHCs). With an unsaturated back- bone, they have been found to be thermally unstable (Gans- Eichler et al., ...
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Harnessing asymmetric N-heterocyclic carbene ligands to optimise SABRE hyperpolarisation
... It was found that iridium catalysts containing NHCs 28,29 were more active than their mono phosphine counterparts be- cause their lifetimes were closer to the optimum. 30 Whilst other iridium complexes with bidentate, 31 ...
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Bidentate N Heterocyclic carbene complexes of group 13 trihydrides and trihalides
... 1.47(3), N(1)–C(1) 1.362(3), N(1)–C(2) 1.463(3), N(2)–C(4) ...1.383(3), N(2)–C(1) 1.357(3), N(1)–C(3) 1.375(3), C(3)–C(4) 1.345(3), N(2)–C(1)–N(1) ...
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Comparison of donor properties of N heterocyclic rings in Ruthenium complexes by Quantum mechanical calculations
... (b) Gaussian 03, Revision B.04, M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery, Jr., T. Vreven, K. N. Kudin, J. C. Burant, J. M. Millam, S. S. Iyengar, ...
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