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Готові списки джерел за темами / Copper(I) N-heterocyclic carbene / Статті в журналах

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Статті в журналах з теми "Copper(I) N-heterocyclic carbene"

Автор: Grafiati

Опубліковано: 28 лютого 2024

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1

Egbert, Jonathan D., Catherine S. J. Cazin, and Steven P. Nolan. "Copper N-heterocyclic carbene complexes in catalysis." Catalysis Science & Technology 3, no. 4 (2013): 912. http://dx.doi.org/10.1039/c2cy20816d.

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2

Trose, Michael, Fady Nahra, and Catherine S. J. Cazin. "Dinuclear N-heterocyclic carbene copper(I) complexes." Coordination Chemistry Reviews 355 (January 2018): 380–403. http://dx.doi.org/10.1016/j.ccr.2017.10.013.

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3

Frogneux, Xavier, Laura Hippolyte, Dimitri Mercier, David Portehault, Corinne Chanéac, Clément Sanchez, Philippe Marcus, François Ribot, Louis Fensterbank, and Sophie Carenco. "Direct Synthesis of N‐Heterocyclic Carbene‐Stabilized Copper Nanoparticles from an N‐Heterocyclic Carbene–Borane." Chemistry – A European Journal 25, no. 49 (August 5, 2019): 11481–85. http://dx.doi.org/10.1002/chem.201901534.

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4

Cisnetti, Federico, Pascale Lemoine, Malika El-Ghozzi, Daniel Avignant, and Arnaud Gautier. "Copper(I) thiophenolate in copper N-heterocyclic carbene preparation." Tetrahedron Letters 51, no. 40 (October 2010): 5226–29. http://dx.doi.org/10.1016/j.tetlet.2010.07.124.

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5

Furst, Marc R. L., and Catherine S. J. Cazin. "Copper N-heterocyclic carbene (NHC) complexes as carbene transfer reagents." Chemical Communications 46, no. 37 (2010): 6924. http://dx.doi.org/10.1039/c0cc02308f.

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6

Mikhaylov, Vladimir N., Igor V. Kazakov, Tatiana N. Parfeniuk, Olesya V. Khoroshilova, Manfred Scheer, Alexey Y. Timoshkin, and Irina A. Balova. "The carbene transfer to strong Lewis acids: copper is better than silver." Dalton Transactions 50, no. 8 (2021): 2872–79. http://dx.doi.org/10.1039/d1dt00235j.

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7

Zeng, Wei, Rui Qiu, En Yu Wang, and Fu Xue Chen. "Trifluoromethyl-Promoted Oxidation of Fischer N-Heterocyclic Carbene Complexes by DMSO." Advanced Materials Research 788 (September 2013): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amr.788.164.

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Анотація:

A new protocol for trifluoromethyl-promoted oxidation of fischer-type N-Heterocyclic Carbene copper complexes has been developed by DMSO, which allows the preparation of imidazolinones from carbene complexes.

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8

Santoro, Orlando, Faïma Lazreg, Yury Minenkov, Luigi Cavallo, and Catherine S. J. Cazin. "N-heterocyclic carbene copper(i) catalysed N-methylation of amines using CO2." Dalton Transactions 44, no. 41 (2015): 18138–44. http://dx.doi.org/10.1039/c5dt03506f.

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9

She, Zhe, Mina R. Narouz, Christene A. Smith, Amy MacLean, Hans-Peter Loock, Heinz-Bernhard Kraatz, and Cathleen M. Crudden. "N-Heterocyclic carbene and thiol micropatterns enable the selective deposition and transfer of copper films." Chemical Communications 56, no. 8 (2020): 1275–78. http://dx.doi.org/10.1039/c9cc08919e.

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10

Remy-Speckmann, Ina, Birte M. Zimmermann, Mahadeb Gorai, Martin Lerch, and Johannes F. Teichert. "Mechanochemical solid state synthesis of copper(I)/NHC complexes with K₃PO₄." Beilstein Journal of Organic Chemistry 19 (April 14, 2023): 440–47. http://dx.doi.org/10.3762/bjoc.19.34.

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Анотація:

A protocol for the mechanochemical synthesis of copper(I)/N-heterocyclic carbene complexes using cheap and readily available K3PO4 as base has been developed. This method employing a ball mill is amenable to typical simple copper(I)/NHC complexes but also to a sophisticated copper(I)/N-heterocyclic carbene complex bearing a guanidine moiety. In this way, the present approach circumvents commonly employed silver(I) complexes which are associated with significant and undesired waste formation and the excessive use of solvents. The resulting bifunctional catalyst has been shown to be active in a variety of reduction/hydrogenation transformations employing dihydrogen as terminal reducing agent.

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11

Thomas, Thomas J., Benjamin A. Merritt, Betsegaw E. Lemma, Adina M. McKoy, Tri Nguyen, Andrew K. Swenson, Jeffrey L. Mills, and Michael G. Coleman. "Cyclopropenation of internal alkynylsilanes and diazoacetates catalyzed by copper(i) N-heterocyclic carbene complexes." Organic & Biomolecular Chemistry 14, no. 5 (2016): 1742–47. http://dx.doi.org/10.1039/c5ob02259b.

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12

Nishikawa, Michihiro, Taichi Sano, Masaya Washimi, Koichiro Takao, and Taro Tsubomura. "Emission properties and Cu(i)–Cu(i) interaction in 2-coordinate dicopper(i)-bis(N-heterocyclic)carbene complexes." Dalton Transactions 45, no. 30 (2016): 12127–36. http://dx.doi.org/10.1039/c6dt01239f.

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Анотація:

The 8-shaped dinuclear copper(i) complexes bearing two N-heterocyclic carbene ligands exhibit strong photoluminescence both in solution and the solid states. Copper(i)–copper(i) interactions play a key role in the photophysical properties.

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13

Sung, Kihyuk, Jinsu Baek, Soonyoung Choi, Byeong-Su Kim, Sang-Ho Lee, In-Hwan Lee, and Hye-Young Jang. "Cu(triNHC)-catalyzed polymerization of glycidol to produce ultralow-branched polyglycerol." RSC Advances 13, no. 34 (2023): 24071–76. http://dx.doi.org/10.1039/d3ra04422j.

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14

Gross, Elad. "N-Heterocyclic Carbene Based Nanolayer for Copper Film Oxidation Mitigation." ECS Meeting Abstracts MA2023-02, no. 13 (December 22, 2023): 1134. http://dx.doi.org/10.1149/ma2023-02131134mtgabs.

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Анотація:

The wide use of copper is limited by its rapid oxidation. Main oxidation mitigation approaches involve alloying or surface passivation technologies. However, surface alloying often modifies the physical properties of copper, while surface passivation is characterized by limited thermal and chemical stability. Herein, we demonstrate an electrochemical approach for surface-anchoring of an N-heterocyclic carbene (NHC) nanolayer on a copper electrode by electro-deposition of alkyne-functionalized imidazolium cations. Water reduction reaction generated a high concentration of hydroxide ions that induced deprotonation of imidazolium cations and self-assembly of NHCs on the copper electrode. In addition, alkyne group deprotonation enabled on-surface polymerization by coupling surface-anchored and solvated NHCs, which resulted in a 2 nm thick NHC-nanolayer. Copper film coated with a NHC-nanolayer demonstrated high oxidation resistance at elevated temperatures and under alkaline conditions.The ease of preparation and well-controlled growth process of electrochemically-induced NHC nanolayer make it an easily-applicable method for large-scale coating to provide thin and effective passivation layer for copper surfaces. Moreover, the electro-induced mechanism of NHC-nanolayer formation makes it possible to selectively deposit the protective layer on conducting copper wires without changing the optical properties of the entire device. These advantages make the presented technology highly suitable for applications that require high transparency, such as solar cells and electroluminescence devices.

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15

Akhdar, Ayman, Sophie Faure, and Arnaud Gautier. "Arylopeptoid oligomers functionalised by combinatorial or sequential on-resin click chemistry using a copper(i)–N-heterocyclic carbene catalyst." Organic & Biomolecular Chemistry 20, no. 12 (2022): 2402–6. http://dx.doi.org/10.1039/d2ob00163b.

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Анотація:

An efficient on-resin click chemistry protocol using a stable copper(i)–N-heterocyclic carbene catalyst is developed for post-functionalization of N-alkylated aminomethylbenzamide oligomers (arylopeptoids).

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16

Parvin, Nasrina, Jabed Hossain, Anjana George, Pattiyil Parameswaran, and Shabana Khan. "N-heterocyclic silylene stabilized monocordinated copper(i)–arene cationic complexes and their application in click chemistry." Chemical Communications 56, no. 2 (2020): 273–76. http://dx.doi.org/10.1039/c9cc09115g.

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Анотація:

Herein, we report N-heterocyclic silylene and N-heterocyclic carbene supported monocoordinated cationic Cu(i) complexes with unsymmetrical arenes (toluene and m-xylene], their reactivity and catalytic application in CuAAC reactions.

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17

Zimmermann, Birte M., Sarah C. K. Kobosil та Johannes F. Teichert. "Catalytic hydrogenation of α,β-unsaturated carboxylic acid derivatives using copper(i)/N-heterocyclic carbene complexes". Chemical Communications 55, № 16 (2019): 2293–96. http://dx.doi.org/10.1039/c8cc09853k.

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Анотація:

A simple and air-stable copper(i)/N-heterocyclic carbene complex enables the catalytic hydrogenation of enoates and enamides, hitherto unreactive substrates employing homogeneous copper catalysis and H₂ as a terminal reducing agent.

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18

Kaicharla, Trinadh, Birte M. Zimmermann, Martin Oestreich, and Johannes F. Teichert. "Using alcohols as simple H2-equivalents for copper-catalysed transfer semihydrogenations of alkynes." Chemical Communications 55, no. 89 (2019): 13410–13. http://dx.doi.org/10.1039/c9cc06637c.

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19

Horsley Downie, Thomas M., Rex S. C. Charman, Jonathan W. Hall, Mary F. Mahon, John P. Lowe, and David J. Liptrot. "A stable ring-expanded NHC-supported copper boryl and its reactivity towards heterocumulenes." Dalton Transactions 50, no. 44 (2021): 16336–42. http://dx.doi.org/10.1039/d1dt03540a.

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20

Charman, Rex S. C., Mary F. Mahon, John P. Lowe, and David J. Liptrot. "The structures of ring-expanded NHC supported copper(i) triphenylstannyls and their phenyl transfer reactivity towards heterocumulenes." Dalton Transactions 51, no. 3 (2022): 831–35. http://dx.doi.org/10.1039/d1dt03109k.

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21

Polgar, Alexander M., Yannick J. Franzke, Sergei Lebedkin, Florian Weigend, and John F. Corrigan. "Preparation and luminescence properties of a M16 heterometallic coinage metal chalcogenide cluster." Dalton Transactions 49, no. 3 (2020): 593–97. http://dx.doi.org/10.1039/c9dt02669j.

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22

Ourri, Benjamin, Olivier Tillement, Tao Tu, Erwann Jeanneau, Ulrich Darbost, and Isabelle Bonnamour. "Copper complexes bearing an NHC–calixarene unit: synthesis and application in click chemistry." New Journal of Chemistry 40, no. 11 (2016): 9477–85. http://dx.doi.org/10.1039/c6nj02089e.

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23

Nayal, Onkar S., Junting Hong, Yang Yang, and Fanyang Mo. "Cu-Catalysed carboxylation of aryl boronic acids with CO2." Organic Chemistry Frontiers 6, no. 21 (2019): 3673–77. http://dx.doi.org/10.1039/c9qo01023h.

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24

Danopoulos, Andreas A., Thomas Simler, and Pierre Braunstein. "N-Heterocyclic Carbene Complexes of Copper, Nickel, and Cobalt." Chemical Reviews 119, no. 6 (March 7, 2019): 3730–961. http://dx.doi.org/10.1021/acs.chemrev.8b00505.

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25

Díez-González, Silvia, and Steven Nolan. "N-Heterocyclic Carbene-Copper(I) Complexes in Homogeneous Catalysis." Synlett 2007, no. 14 (August 13, 2007): 2158–67. http://dx.doi.org/10.1055/s-2007-985577.

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26

Egbert, Jonathan D., Catherine S. J. Cazin, and Steven P. Nolan. "ChemInform Abstract: Copper N-Heterocyclic Carbene Complexes in Catalysis." ChemInform 44, no. 22 (May 13, 2013): no. http://dx.doi.org/10.1002/chin.201322224.

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27

Kubota, Koji, Minami Uesugi, Shun Osaki, and Hajime Ito. "Synthesis of 2-alkyl-2-boryl-substituted-tetrahydrofurans via copper(i)-catalysed borylative cyclization of aliphatic ketones." Organic & Biomolecular Chemistry 17, no. 23 (2019): 5680–83. http://dx.doi.org/10.1039/c9ob00962k.

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28

Jia, Zhifang, Kewei Wang, Tao Li, Bien Tan, and Yanlong Gu. "Functionalized hypercrosslinked polymers with knitted N-heterocyclic carbene–copper complexes as efficient and recyclable catalysts for organic transformations." Catalysis Science & Technology 6, no. 12 (2016): 4345–55. http://dx.doi.org/10.1039/c5cy02260f.

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Анотація:

An N-heterocyclic carbene–copper complex supported on hypercrosslinked polymers was synthesized and characterized by spectroscopic methods, displaying very good catalytic activity in many organic reactions.

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29

Biewend, Michel, Philipp Michael, and Wolfgang H. Binder. "Detection of stress in polymers: mechanochemical activation of CuAAC click reactions in poly(urethane) networks." Soft Matter 16, no. 5 (2020): 1137–41. http://dx.doi.org/10.1039/c9sm02185j.

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Анотація:

We report on copper(i)-bis(N-heterocyclic carbene)s (NHC) for quantitative stress-sensing. This mechanophore is embedded within a polyurethane network, triggering a fluorogenic copper(i) azide alkyne cycloaddition (CuAAC) of 8-azido-2-naphtol and 3-hydroxy phenylacetylene.

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30

Yang, Longhua, Yanli Yuan, Hongming Wang, Ning Zhang, and Sanguo Hong. "Theoretical insights into copper(i)–NHC-catalyzed C–H carboxylation of terminal alkynes with CO2: the reaction mechanisms and the roles of NHC." RSC Adv. 4, no. 61 (2014): 32457–66. http://dx.doi.org/10.1039/c4ra00254g.

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31

Jang, Won Jun, Byung-Nam Kang, Ji Hun Lee, Yoon Mi Choi, Chong-Hyeak Kim, and Jaesook Yun. "NHC-copper-thiophene-2-carboxylate complex for the hydroboration of terminal alkynes." Organic & Biomolecular Chemistry 17, no. 21 (2019): 5249–52. http://dx.doi.org/10.1039/c9ob00839j.

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Анотація:

An air-stable N-heterocyclic carbene–copper thiophene-2-carboxylate (CuTC) complex has been prepared for the stereoselective hydroboration of terminal alkynes using pinacolborane (HBpin) or 1,8-naphthalenediaminatoborane (HBdan).

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32

Lazreg, Faïma, Marie Vasseur, Alexandra M. Z. Slawin, and Catherine S. J. Cazin. "Aerobic synthesis of N-sulfonylamidines mediated by N-heterocyclic carbene copper(I) catalysts." Beilstein Journal of Organic Chemistry 16 (March 24, 2020): 482–91. http://dx.doi.org/10.3762/bjoc.16.43.

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Анотація:

A new catalytic strategy for the one-pot synthesis of N-sulfonylamidines is described. The cationic copper(I) complexes were found to be highly active and efficient under mild conditions in air and in the absence of solvent. A copper acetylide is proposed as key intermediate in this transformation.

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33

Schöffler, Anne L., Ata Makarem, Frank Rominger, and Bernd F. Straub. "Dinuclear thiazolylidene copper complex as highly active catalyst for azid–alkyne cycloadditions." Beilstein Journal of Organic Chemistry 12 (July 21, 2016): 1566–72. http://dx.doi.org/10.3762/bjoc.12.151.

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Анотація:

A dinuclear N-heterocyclic carbene (NHC) copper complex efficiently catalyzes azide–alkyne cycloaddition (CuAAC) “click” reactions. The ancillary ligand comprises two 4,5-dimethyl-1,3-thiazol-2-ylidene units and an ethylene linker. The three-step preparation of the complex from commercially available starting compounds is more straightforward and cost-efficient than that of the previously described 1,2,4-triazol-5-ylidene derivatives. Kinetic experiments revealed its high catalytic CuAAC activity in organic solvents at room temperature. The activity increases upon addition of acetic acid, particularly for more acidic alkyne substrates. The modular catalyst design renders possible the exchange of N-heterocyclic carbene, linker, sacrificial ligand, and counter ion.

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34

Sgro, Michael J., Warren E. Piers, and Patricio E. Romero. "Synthesis, structural characterization and thermal properties of copper and silver silyl complexes." Dalton Transactions 44, no. 8 (2015): 3817–28. http://dx.doi.org/10.1039/c4dt03770g.

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Анотація:

A series of copper and silver-silyl complexes containing N-heterocyclic carbene or N-donor ligands were synthesized and characterized in the solid state. A number of different structural forms were observed and many compounds were shown to be volatile.

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35

Zacharias, Adway O., James X. Mao, Kwangho Nam, and H. V. Rasika Dias. "Copper(i) and silver(i) chemistry of vinyltrifluoroborate supported by a bis(pyrazolyl)methane ligand." Dalton Transactions 50, no. 22 (2021): 7621–32. http://dx.doi.org/10.1039/d1dt00974e.

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Анотація:

Copper and silver complexes of vinyltrifluoroborate have been isolated and characterized using bis(pyrazolyl)methane, acetonitrile and N-heterocyclic carbene supporting ligands. Computational analysis of these systems includes gold as well.

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36

Riener, Korbinian, Alexander Pöthig, Mirza Cokoja, Wolfgang A. Herrmann, and Fritz E. Kühn. "Structure and spectroscopic properties of the dimeric copper(I) N-heterocyclic carbene complex [Cu2(CNCt-Bu)2](PF6)2." Acta Crystallographica Section C Structural Chemistry 71, no. 8 (July 7, 2015): 643–46. http://dx.doi.org/10.1107/s2053229615012140.

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Анотація:

In recent years, the use of copper N-heterocyclic carbene (NHC) complexes has expanded to fields besides catalysis, namely medicinal chemistry and luminescence applications. In the latter case, multinuclear copper NHC compounds have attracted interest, however, the number of these complexes in the literature is still quite limited. Bis[μ-1,3-bis(3-tert-butylimidazolin-2-yliden-1-yl)pyridine]-1κ4C2,N:N,C2′;2κ4C2,N:N,C2′-dicopper(I) bis(hexafluoridophosphate), [Cu2(C19H25N5)2](PF6)2, is a dimeric copper(I) complex bridged by two CNC,i.e.bis(N-heterocyclic carbene)pyridine, ligands. Each CuIatom is almost linearly coordinated by two NHC ligands and interactions are observed between the pyridine N atoms and the metal centres, while no cuprophilic interactions were observed. Very strong absorption bands are evident in the UV–Vis spectrum at 236 and 274 nm, and an emission band is observed at 450 nm. The reported complex is a new example of a multinuclear copper NHC complex and a member of a compound class which has only rarely been reported.

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37

Chapman, Michael R., Yarseen M. Shafi, Nikil Kapur, Bao N. Nguyen, and Charlotte E. Willans. "Electrochemical flow-reactor for expedient synthesis of copper–N-heterocyclic carbene complexes." Chemical Communications 51, no. 7 (2015): 1282–84. http://dx.doi.org/10.1039/c4cc08874c.

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Анотація:

An electrochemical flow-cell has been developed for the highly efficient and selective generation of organometallic Cu^I–N-heterocyclic carbene complexes under neutral and ambient conditions.

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38

Korytiaková, Eva, Niklas O. Thiel, Felix Pape, and Johannes F. Teichert. "Copper(i)-catalysed transfer hydrogenations with ammonia borane." Chemical Communications 53, no. 4 (2017): 732–35. http://dx.doi.org/10.1039/c6cc09067b.

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Анотація:

Highly Z-selective alkyne transfer semihydrogenations and conjugate transfer hydrogenations of enoates can be effected by employing a readily available copper(i)/N-heterocyclic carbene (NHC) complex, [IPrCuOH], in combination with ammonia borane as a H₂ equivalent.

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39

Schlagintweit, Jonas F., Linda Nguyen, Florian Dyckhoff, Felix Kaiser, Robert M. Reich, and Fritz E. Kühn. "Exploring different coordination modes of the first tetradentate NHC/1,2,3-triazole hybrid ligand for group 10 complexes." Dalton Transactions 48, no. 39 (2019): 14820–28. http://dx.doi.org/10.1039/c9dt03430g.

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Анотація:

Synthesis and characterisation of the first tetradentate N-heterocyclic carbene (NHC)/1,2,3-triazole hybrid ligand obtained by means of copper(i) catalyzed “click” chemistry and its application for the synthesis of group 10 complexes is reported.

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40

Humenny, Will J., Stefan Mitzinger, Chhatra B. Khadka, Bahareh Khalili Najafabadi, Isabelle Vieira, and John F. Corrigan. "N-heterocyclic carbene stabilized copper- and silver-phenylchalcogenolate ring complexes." Dalton Transactions 41, no. 15 (2012): 4413. http://dx.doi.org/10.1039/c2dt11998f.

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41

Li, Zhenghua, Liang Zhang, Masayoshi Nishiura, Gen Luo, Yi Luo, and Zhaomin Hou. "Enantioselective Cyanoborylation of Allenes by N-Heterocyclic Carbene-Copper Catalysts." ACS Catalysis 10, no. 20 (September 11, 2020): 11685–92. http://dx.doi.org/10.1021/acscatal.0c03018.

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42

Hu, Xile, Ingrid Castro-Rodriguez, and Karsten Meyer. "Copper Complexes of Nitrogen-Anchored Tripodal N-Heterocyclic Carbene Ligands." Journal of the American Chemical Society 125, no. 40 (October 2003): 12237–45. http://dx.doi.org/10.1021/ja036880+.

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43

Zhang, Liang, and Zhaomin Hou. "N-Heterocyclic carbene (NHC)–copper-catalysed transformations of carbon dioxide." Chemical Science 4, no. 9 (2013): 3395. http://dx.doi.org/10.1039/c3sc51070k.

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44

Della Pergola, Roberto, Annalisa Sironi, André Rosehr, Valentina Colombo, and Angelo Sironi. "N-heterocyclic carbene copper complexes tethered to iron carbidocarbonyl clusters." Inorganic Chemistry Communications 49 (November 2014): 27–29. http://dx.doi.org/10.1016/j.inoche.2014.09.007.

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45

Grandbois, Alain, Marie-Ève Mayer, Marion Bédard, Shawn K Collins, and Typhène Michel. "Synthesis ofC1-Symmetric BINOLs Employing N-Heterocyclic Carbene-Copper Complexes." Chemistry - A European Journal 15, no. 38 (September 28, 2009): 9655–59. http://dx.doi.org/10.1002/chem.200901295.

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46

Kaeffer, Nicolas, Hsueh-Ju Liu, Hung-Kun Lo, Alexey Fedorov, and Christophe Copéret. "An N-heterocyclic carbene ligand promotes highly selective alkyne semihydrogenation with copper nanoparticles supported on passivated silica." Chemical Science 9, no. 24 (2018): 5366–71. http://dx.doi.org/10.1039/c8sc01924j.

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47

Pape, Felix, and Johannes Teichert. "Tethered NHC Ligands for Stereoselective Alkyne Semihydrogenations." Synthesis 49, no. 11 (February 17, 2017): 2470–82. http://dx.doi.org/10.1055/s-0036-1590112.

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Анотація:

A copper(I)-catalyzed semihydrogenation of internal alkynes has been developed. A variety of oxygen- and nitrogen-tethered N-heterocyclic carbene (NHC) complexes have been investigated, leading to a highly Z-selective transformation. The catalyst is generated from inexpensive copper(I) chloride in situ and allows catalytic semihydrogenation down to 10 bar H2.

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48

Xu, Jingxiu, Qingmao Chen, Zhigao Luo, Xiaodong Tang, and Jinwu Zhao. "N-Heterocyclic carbene copper catalyzed quinoline synthesis from 2-aminobenzyl alcohols and ketones using DMSO as an oxidant at room temperature." RSC Advances 9, no. 49 (2019): 28764–67. http://dx.doi.org/10.1039/c9ra04926f.

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Анотація:

A facile and practical process for the synthesis of quinolines through an N-heterocyclic carbene copper catalyzed indirect Friedländer reaction from 2-aminobenzyl alcohol and aryl ketones using DMSO as an oxidant at room temperature is reported.

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49

Zhang, Liang, and Zhaomin Hou. "N-Heterocyclic carbene copper-catalyzed carboxylation of C-B and C-H bonds with carbon dioxide." Pure and Applied Chemistry 84, no. 8 (April 30, 2012): 1705–12. http://dx.doi.org/10.1351/pac-con-11-10-33.

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Анотація:

N-Heterocyclic carbene (NHC) copper complexes serve as an excellent catalytic system for carboxylation of alkyl-, aryl-, and alkenylboron compounds and some aromatic heterocyclic C-H bonds with carbon dioxide (CO2), to afford various functional-group-containing carboxylic acids or their ester derivatives. Some key reaction intermediates have been isolated and structurally characterized, thus providing important insight into the mechanistic details of these catalytic reactions.

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50

Thiel, Niklas O., Lea T. Brechmann, and Johannes F. Teichert. "Catalytic Hydrogenations with Cationic Heteroleptic Copper(I)/N-Heterocyclic Carbene Complexes." Synlett 30, no. 07 (March 6, 2019): 783–86. http://dx.doi.org/10.1055/s-0037-1612302.

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Анотація:

A new heteroleptic cationic copper(I) complex bearing two N-heterocyclic carbene (NHC) ligands has been prepared. In situ, a Cu–O bond can be generated which enables the complex to catalytically activate H2. The resulting complex shows activity in catalytic chemo- and stereoselective alkyne semihydrogenations as well as conjugate reductions of enones.

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