Relevant bibliographies by topics / N-heterocyclic carbenes (NHCs)

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Academic literature on the topic 'N-heterocyclic carbenes (NHCs)'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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Journal articles on the topic "N-heterocyclic carbenes (NHCs)"

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Lin, Ivan JB, and Chandra Sekhar Vasam. "Review of gold(I) N-heterocyclic carbenes." Canadian Journal of Chemistry 83, no. 6-7 (2005): 812–25. http://dx.doi.org/10.1139/v05-087.

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This review presents an overview of the work on Au(I)–NHC chemistry. The efficiency of different synthetic strategies of Au(I)–NHCs is discussed. Transmetallation of Ag(I)–NHCs appears to be an easy method as compared with the others. The influence of aurophilicity "a traditional property of a Au(I) center" in making the supramolecular assemblies is also covered. The combination of the Au(I) center with NHCs has great potential in the fields of medicine, catalysis, liquid crystal, and optoelectronic.Key words: gold–carbenes, silver–carbenes, carbene transfer, aurophilicity.
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Naeimi, Khadijeh, Mehdi Bayat, and Ehsan Alavi Pour. "Trinuclear cylinder-like potential anticancer and antibacterial Cu(i), Ag(i) and Au(i) nano-sized cationic complexes with tris-NHC ligands: cationic M3 metal cluster displaying positive or negative cooperativity in triad [L2(R)6→M3]3+ complexes?" RSC Advances 15, no. 9 (2025): 6742–52. https://doi.org/10.1039/d4ra08514k.

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N-Heterocyclic carbenes (NHCs) are a class of organic molecules containing a divalent carbon atom, known as a carbene, within a heterocyclic (ring) structure where nitrogen atoms (N) form part of the ring.
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De Vreese, Rob, and Matthias D’hooghe. "N-Heterocyclic carbene/Brønsted acid cooperative catalysis as a powerful tool in organic synthesis." Beilstein Journal of Organic Chemistry 8 (March 14, 2012): 398–402. http://dx.doi.org/10.3762/bjoc.8.43.

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The interplay between metals and N-heterocyclic carbenes (NHCs) has provided a window of opportunities for the development of novel catalytic strategies within the past few years. The recent successful combination of Brønsted acids with NHCs has added a new dimension to the field of cooperative catalysis, enabling the stereoselective synthesis of functionalized pyrrolidin-2-ones as valuable scaffolds in heterocyclic chemistry. This Commentary will briefly highlight the concept of N-heterocyclic carbene/Brønsted acid cooperative catalysis as a new and powerful methodology in organic chemistry.
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Costabile, Chiara, Stefania Pragliola, and Fabia Grisi. "C2-Symmetric N-Heterocyclic Carbenes in Asymmetric Transition-Metal Catalysis." Symmetry 14, no. 8 (2022): 1615. http://dx.doi.org/10.3390/sym14081615.

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The last decades have witnessed a rapid growth of applications of N-heterocyclic carbenes (NHCs) in different chemistry fields. Due to their unique steric and electronic properties, NHCs have become a powerful tool in coordination chemistry, allowing the preparation of stable metal-ligand frameworks with both main group metals and transition metals. An overview on the use of five membered monodentate C2-symmetric N-heterocyclic carbenes (NHCs) as ligands for transition-metal complexes and their most relevant applications in asymmetric catalysis is offered.
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Andrada, Diego M., Nicole Holzmann, Thomas Hamadi та Gernot Frenking. "Direct estimate of the internal π-donation to the carbene centre within N-heterocyclic carbenes and related molecules". Beilstein Journal of Organic Chemistry 11 (24 грудня 2015): 2727–36. http://dx.doi.org/10.3762/bjoc.11.294.

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Fifteen cyclic and acylic carbenes have been calculated with density functional theory at the BP86/def2-TZVPP level. The strength of the internal X→p(π) π-donation of heteroatoms and carbon which are bonded to the C(II) atom is estimated with the help of NBO calculations and with an energy decomposition analysis. The investigated molecules include N-heterocyclic carbenes (NHCs), the cyclic alkyl(amino)carbene (cAAC), mesoionic carbenes and ylide-stabilized carbenes. The bonding analysis suggests that the carbene centre in cAAC and in diamidocarbene have the weakest X→p(π) π-donation while meso
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Beig, Nosheen, Varsha Goyal, Raakhi Gupta, and Raj K. Bansal. "N-Heterocyclic Carbenes–CuI Complexes as Catalysts: A Theoretical Insight." Australian Journal of Chemistry 74, no. 7 (2021): 503. http://dx.doi.org/10.1071/ch20332.

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The electronic structures of N-heterocyclic carbenes (NHC) imidazolinylidene, thiazolinylidene, imidazolylidene, thiazolylidene, and 1,2,4-triazolylidene and their complexes with cuprous halides (CuX, X=Cl, Br, I) were investigated theoretically at the B3LYP/def2-SVP level. In contrast to other NHCs, imidazolylidene and 1,2,4-triazolylidene do not dimerize owing to the negligible coefficient of the vacant p-orbital at the carbene centre in their respective LUMOs. This is further supported by their greater thermodynamic and kinetic stabilities revealed by greater activation free energies and sm
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Kato, Terumasa, Shin-ichi Matsuoka, and Masato Suzuki. "N-Heterocyclic carbene-mediated redox condensation of alcohols." Chemical Communications 52, no. 55 (2016): 8569–72. http://dx.doi.org/10.1039/c6cc04154j.

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Alauddin, Mohammad, and Mazharul M. Islam. "A computational characterization of N-heterocyclic carbenes for catalytic and nonlinear optical applications." Zeitschrift für Naturforschung B 79, no. 4 (2024): 215–23. http://dx.doi.org/10.1515/znb-2023-0092.

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Abstract Very recently, N-heterocyclic carbenes (NHCs) have found a wide range of applications in the fields of catalysis and nonlinear optics. Herein, we have employed 1,3-bis-(1(S)-benzyl)-4,5-dihydro-imidazol-based carbene as a reference molecule and substituted one H atom from each CH2 of the benzyl groups in both sides by CH3, NH2, and CF3 to study the thermodynamic and opto-electronic properties of NHCs theoretically. It was observed that the enthalpy (H), Gibb’s free energy (G), specific heat capacity (C v), and entropy (S) increase significantly in the presence of the electron-withdraw
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Kato, Terumasa, Shin-ichi Matsuoka, and Masato Suzuki. "Transfer hydrogenation promoted by N-heterocyclic carbene and water." Chemical Communications 51, no. 73 (2015): 13906–9. http://dx.doi.org/10.1039/c5cc05117g.

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Martynova, Ekaterina A., Nikolaos V. Tzouras, Gianmarco Pisanò, Catherine S. J. Cazin, and Steven P. Nolan. "The “weak base route” leading to transition metal–N-heterocyclic carbene complexes." Chemical Communications 57, no. 32 (2021): 3836–56. http://dx.doi.org/10.1039/d0cc08149c.

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Dissertations / Theses on the topic "N-heterocyclic carbenes (NHCs)"

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Garrison, Jered C. "Silver N-Heterocyclic Carbenes." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1124128998.

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Schwedtmann, Kai, Robin Schoemaker, Felix Hennersdorf, et al. "Cationic 5-phosphonio-substituted N-heterocyclic carbenes." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30233.

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2-Phosphanyl-substituted imidazolium salts 2-PR2(4,5-Cl-Im)[OTf] (9a,b[OTf]) (4,5-Cl-Im = 4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolium) (a: R = Cy, b: R = Ph) are prepared from the reaction of R2PCl (R = Cy, Ph) with NHC 8 (4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolin-2-ylidene) in the presence of Me3SiOTf. 5-Phospanyl-substituted imidazolium salts 5-PR2(2,4-Cl-Im)[OTf] (10a,b[OTf]) are obtained in quantitative yield when a slight excess of the NHC 8 is used. 5-Phosphonio-substituted imidazolium salts 5-PR2Me(2,4-Cl-Im)[OTf]2 (14a,b[OTf]2) and 5-PR2F(2,4-Cl-Im)[OTf]2 (16
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Schwedtmann, Kai, Robin Schoemaker, Felix Hennersdorf, et al. "Cationic 5-phosphonio-substituted N-heterocyclic carbenes." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-221859.

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2-Phosphanyl-substituted imidazolium salts 2-PR2(4,5-Cl-Im)[OTf] (9a,b[OTf]) (4,5-Cl-Im = 4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolium) (a: R = Cy, b: R = Ph) are prepared from the reaction of R2PCl (R = Cy, Ph) with NHC 8 (4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolin-2-ylidene) in the presence of Me3SiOTf. 5-Phospanyl-substituted imidazolium salts 5-PR2(2,4-Cl-Im)[OTf] (10a,b[OTf]) are obtained in quantitative yield when a slight excess of the NHC 8 is used. 5-Phosphonio-substituted imidazolium salts 5-PR2Me(2,4-Cl-Im)[OTf]2 (14a,b[OTf]2) and 5-PR2F(2,4-Cl-Im)[OTf]2 (16
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Douglas, James J. "NHCs in organocatalysis : azolium enolate generation and synthetic applications." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3085.

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This thesis details investigations into organocatalytic reactions promoted by N Heterocyclic Carbenes (NHCs) that proceed via an assumed azolium enolate intermediate. Initial research focused on the catalytic asymmetric synthesis of β-lactones via an NHC-catalysed formal [2+2] cycloaddition of alkylarylketenes and chloral. This process operated in good yield (typically >70%) and moderate diastereoselectivity (typically ~75:25 dr, anti:syn) for a range of alkylarylketenes. The enantioselectivity was consistently high for the major anti diastereomer (typically >80% ee) and minor syn diastereomer
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Turner, Zoe Rose. "Small molecule activation using electropositive metal N-heterocyclic carbene complexes." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/8210.

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The versatility of N-heterocyclic carbenes (NHCs) is demonstrated by numerous practical applications in homogeneous transition metal catalysis, organocatalysis and materials science. There remains a paucity of electropositive metal NHC complexes and so this chemistry is poorly developed with respect to that of the late transition metal and main group elements. This thesis describes the synthesis of new alkoxy-tethered NHC proligands, their use in the synthesis of reactive metal amide and metal alkyl complexes, and finally small molecule activation using these complexes. Chapter One introduces
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Martin, Thomas Antony. "Unravelling the photochemistry of organometallic N-heterocyclic carbene complexes." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.547630.

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This thesis describes the synthesis, characterisation and reactivity of new manganese and rhenium(I) NHC complexes, which have been investigated both thermally and photochemically and the results contrasted with existing phosphine analogues in the literature. Cp’Mn(CO)2(NHC) (NHC = IEt2Me2 1, IMes 2, IiPr2Me2 3 and IPr 4) were synthesised and investigated by TRIR spectroscopy. Loss of CO was observed after 355 nm irradiation to form agostically stabilised intermediates, which reformed the parent species by recombination with CO on the nanosecond timescale. Loss of NHC was not observed, in cont
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Durmus, Semih. "Silver(I) and Gold(I) N-Heterocyclic Carbene Complexes." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1165247084.

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McMullon, Max William. "Exploiting anionically-tethered N-heterocyclic carbene complexes for small molecule activation." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31079.

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N-heterocyclic carbenes (NHCs) can be used as ligands for organometallics complexes, which can then facilitate numerous catalytic applications, such as, C-H activation, small molecule activation and numerous materials applications. The use of anionically-tethered NHCs for usage with electropositive metals has been pioneered by the Arnold group within the last decade. This thesis describes the synthesis of both aryloxide- and amide-tethered NHC organometallic complexes of s-, p-, d- and f-block metals to provide a platform for small molecule activation. Once synthesised, the reactivity of some
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Conti, Riccardo. "Synthesis of novel N-Heterocyclic Carbenes for chiral complexes and catalysis." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13374/.

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The aim of my training period has been the synthesis of new chiral N-heterocyclic carbene precursors starting from camphoric diacid and the employment of imidazolium salts derived NHC as linker to dendrimers supports for organometallic catalysis. New chiral ligands are needed to develop new catalytic systems for enantioselective transformations. The new type of ligand described was developed starting from camphoric diacid, a cheap chiral molecule, following different synthetic strategies. Asymmetric functionalized chiral NHCs are readily available by methods developed and two of the precursors
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Germaneau, Romain. "Amphiphilic sugar metal carbenes : from fischer type to N-Heterocyclic carbenes (NHCs) : investigations on potential gelation and catalytic activities." Paris 6, 2007. http://www.theses.fr/2007PA066209.

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Le travail présenté ici décrit, en quatre parties, la synthèse d’une nouvelle famille de complexes N-hétérocycliques carbèniques amphiphiles. Le remplacement du carbène de Fischer, présent dans la structure sur laquelle le travail est basé, par un groupe NHC est apparu difficile. Ce problème a pu être résolu par l’utilisation de différents espaceurs. Utilisant une méthode à base d’oxyde d’argent, une nouvelle famille de systèmes amphiphiles comportant un carbène de type NHC du chrome fut accessible. Une étude sur la combinaison possible de la chimie des carbènes de Fischer avec celle des carbè
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Book chapters on the topic "N-heterocyclic carbenes (NHCs)"

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Hopkinson, Matthew N., and Frank Glorius. "An Overview of NHCs." In N-Heterocyclic Carbenes in Organocatalysis. Wiley-VCH Verlag GmbH & Co. KGaA, 2019. http://dx.doi.org/10.1002/9783527809042.ch1.

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Slaughter, LeGrande M. "Catalysis with Acyclic Aminocarbene Ligands: Alternatives to NHCs with Distinct Steric and Electronic Properties." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch16.

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Lazreg, Faïma, and Catherine S. J. Cazin. "NHC-Copper Complexes and their Applications." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch08.

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Lazreg, Faïma, and Catherine S. J. Cazin. "Medical Applications of NHC-Gold and -Copper Complexes." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch07.

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Wurm, Thomas, Abdullah Mohamed Asiri, and A. Stephen K. Hashmi. "NHC-Au(I) Complexes: Synthesis, Activation, and Application." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch09.

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Wagers, Patrick O., Kerri L. Shelton, Matthew J. Panzner, Claire A. Tessier, and Wiley J. Youngs. "Synthesis and Medicinal Properties of Silver-NHC Complexes and Imidazolium Salts." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch06.

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Murphy, Luke J., Katherine N. Robertson, Jason D. Masuda, and Jason A. C. Clyburne. "NHC Complexes of Main Group Elements: Novel Structures, Reactivity, and Catalytic Behavior." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch15.

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Dierick, Steve, and István E. Markó. "NHC Platinum(0) Complexes: Unique Catalysts for the Hydrosilylation of Alkenes and Alkynes." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch05.

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Louie, Janis. "Ni-NHC Mediated Catalysis." In N-Heterocyclic Carbenes in Synthesis. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/9783527609451.ch7.

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Chauhan, Pankaj, Suruchi Mahajan, Xiang-Yu Chen, and Dieter Enders. "Domino Processes in NHC Catalysis." In N-Heterocyclic Carbenes in Organocatalysis. Wiley-VCH Verlag GmbH & Co. KGaA, 2019. http://dx.doi.org/10.1002/9783527809042.ch5.

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