Articles with "nhc" as a keyword



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Design of Chiral NHC‐Carboxylates as Potential Ligands for Pd‐Catalyzed Enantioselective C−H Activation

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Published in 2021 at "Helvetica Chimica Acta"

DOI: 10.1002/hlca.202100015

Abstract: Despite numerous efforts, the synthesis of scalemic carbo- and heterocycles through Pd0-catalyzed C(sp3)-H activation employing chiral ancillary ligands or chiral bases is still limited. Inspired by the recently reported outstanding performance of IBiox-type NHC ligands… read more here.

Keywords: activation; nhc carboxylates; design chiral; nhc ... See more keywords
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Bi4O5I2/nitrogen-doped hierarchical carbon (NHC) composites with tremella-like structure for high photocatalytic performance.

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Published in 2019 at "Chemosphere"

DOI: 10.1016/j.chemosphere.2019.05.043

Abstract: BiOI is a visible photocatalyst towards organic pollutant. In this work, biomass waste (withered typha grass) was used to fabricate nitrogen-doped hierarchical carbon (NHC) by an one-step carbonization route. Then NHC provided a good carrier… read more here.

Keywords: nitrogen doped; nhc; bi4o5i2; hierarchical carbon ... See more keywords
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Self-assembled monolayers of N-heterocyclic carbene on gold: Stability under ultrasonic circumstance and computational study

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Published in 2018 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"

DOI: 10.1016/j.colsurfa.2017.11.041

Abstract: Abstract Self-assembled monolayers (SAMs) of N-heterocyclic carbene (NHC) are built up on gold substrate. Electrochemical impedance spectroscopy (EIS) tests show that the NHC-based SAMs exhibit high stability under ultrasonic circumstance, over 90% of NHC molecules… read more here.

Keywords: nhc; assembled monolayers; ultrasonic circumstance; self assembled ... See more keywords
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Mechanism studies of oxidation and hydrolysis of Cu(I)–NHC and Ag–NHC in solution under air

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Published in 2020 at "Journal of Organometallic Chemistry"

DOI: 10.1016/j.jorganchem.2019.121025

Abstract: Abstract The decomposition of copper(I)–NHC and silver-NHC complexes in solution under air was studied. The Cu(I)–NHCs were oxidized into urea derivatives and hydrolysed into imidazoliums or benzimidazoliums. The decomposition of Ag–NHC with a saturated backbone… read more here.

Keywords: solution air; decomposition; nhc nhc; nhc ... See more keywords
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PEPPSI type Pd(II)NHC complexes bearing chloro-/fluorobenzyl group: Synthesis, characterization, crystal structures, α-glycosidase and acetylcholinesterase inhibitory properties

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Published in 2021 at "Polyhedron"

DOI: 10.1016/j.poly.2021.115060

Abstract: Abstract This work reported the synthesis of a new PEPPSI (Pyridine Enhanced Precatalyst Preparation, Stabilization and Initiation) type Pd(II)N-heterocyclic carbene (NHC) complexes bearing halo-benzyl (4-florobenzyl and 2-chloro-4-florobenzyl) group. These new complexes were synthesized from the… read more here.

Keywords: nhc complexes; complexes bearing; crystal structures; peppsi type ... See more keywords
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Heptadentate, Octadentate, Or Even Nonadentate? Denticity in the Unexpected Formation of an All-Carbon Donor-Atom Ligand in RhIII(Cp*)(Anthracenyl-NHC) Complexes.

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Published in 2021 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.1c00711

Abstract: Investigations on incorporating an N-flanking anthracenyl moiety to [Rh(Cp*)(NHC)Cl2] complexes surprisingly led to the formation of an intramolecular C-C bond between the Cp* and anthracenyl moieties, with additional auxiliary interactions between the metal and the… read more here.

Keywords: nhc; anthracenyl; carbon donor; formation ... See more keywords
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Expedient Syntheses of Neutral and Cationic Au(I)–NHC Complexes

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Published in 2017 at "Organometallics"

DOI: 10.1021/acs.organomet.7b00622

Abstract: The synthesis and isolation of gold(I) precatalysts often requires the generation of several isolable intermediates as well as numerous purification steps. New protocols for the expedient synthesis of neutral [Au(OH)(NHC)] and [Au(CH2COCH3)(NHC)] species from [AuCl(NHC)]… read more here.

Keywords: cationic nhc; nhc; nhc complexes; expedient syntheses ... See more keywords
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Hydrogen Transfer Activation via Stabilization of Coordinatively Vacant Sites: Tuning Long-Range π-System Electronic Interaction between Ru(0) and NHC Pendants

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Published in 2019 at "Organometallics"

DOI: 10.1021/acs.organomet.8b00850

Abstract: The insertion of a pyridine substituent on the lateral chain of N-heterocyclic carbene ligands enhances the catalytic activity of [Ru(CO)2(cyclopentadienone)(NHC)] complexes, precursors of Shvo-type catalysts, toward the hydrogenation of 4-fluoroacetophenone in refluxing 2-propanol as hydrogen… read more here.

Keywords: hydrogen transfer; via stabilization; transfer activation; nhc ... See more keywords
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Neutral Dinuclear Copper(I)-NHC Complexes: Synthesis and Application in the Hydrosilylation of Ketones

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Published in 2017 at "ACS Catalysis"

DOI: 10.1021/acscatal.6b02723

Abstract: The synthesis of a class of highly stable neutral dinuclear Cu(I)-NHC complexes using 1,2,4-triazole as a bridging ligand is described. Various NHCs were used to generate a library of [Cu(μ-trz)(NHC)]2 complexes. Interestingly, [Cu(μ-trz)(IPr)]2 was found… read more here.

Keywords: nhc; neutral dinuclear; hydrosilylation ketones; nhc complexes ... See more keywords
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N-Alkylation and N-Methylation of Amines with Alcohols Catalyzed by Nitrile-Substituted NHC–Ir(III) and NHC–Ru(II) Complexes

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Published in 2023 at "ACS Omega"

DOI: 10.1021/acsomega.2c06341

Abstract: A series of nitrile-modified N-heterocyclic carbene (NHC) complexes of Ir(III) (2a–e) and Ru(II) (3a–d) have been prepared by transmetallation of [IrCp*Cl2]2 and [RuCl2(p-cymene)]2 forming an in situ NHC–Ag complex. The structures of all complexes were… read more here.

Keywords: methylation; nhc; nhc iii; nhc complexes ... See more keywords
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Ag–NHC anchored on silica: an efficient ultra-low loading catalyst for regioselective 1,2,3-triazole synthesis

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Published in 2019 at "New Journal of Chemistry"

DOI: 10.1039/c9nj03892b

Abstract: A silica-supported silver complex, Ag–NHC@SiO2, was prepared by an anchoring coordination technique, which was successfully employed for the click reaction under mild reaction conditions. read more here.

Keywords: silica efficient; nhc; efficient ultra; ultra low ... See more keywords