Academic literature on the topic 'Carbene N-Heterocyclic borane'

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Journal articles on the topic "Carbene N-Heterocyclic borane"

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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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Pidlypnyi, Nazar, Jan C. Namyslo, Martin H. H. Drafz, Martin Nieger, and Andreas Schmidt. "Betaine–Carbene Interconversions. From N-Ylides to Zwitterionic N-Heterocyclic Carbene–Borane Adducts." Journal of Organic Chemistry 78, no. 3 (January 18, 2013): 1070–79. http://dx.doi.org/10.1021/jo302479p.

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Winkler, Andrea, Matthias Freytag, Peter G. Jones, and Matthias Tamm. "Preparation and reactivity of an isolable N-heterocyclic carbene–borane." Journal of Organometallic Chemistry 775 (January 2015): 164–68. http://dx.doi.org/10.1016/j.jorganchem.2014.04.037.

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Banerjee, Dipshikha, Céline Besnard, and E. Peter Kündig. "Chiral N-Heterocyclic Carbene Borane Complexes: Synthesis and Structural Analysis." Organometallics 31, no. 2 (January 4, 2012): 709–15. http://dx.doi.org/10.1021/om201087n.

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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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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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Liu, Ming, Jan C. Namyslo, Martin Nieger, Mika Polamo, and Andreas Schmidt. "From betaines to anionic N-heterocyclic carbenes. Borane, gold, rhodium, and nickel complexes starting from an imidazoliumphenolate and its carbene tautomer." Beilstein Journal of Organic Chemistry 12 (December 8, 2016): 2673–81. http://dx.doi.org/10.3762/bjoc.12.264.

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The mesomeric betaine imidazolium-1-ylphenolate forms a borane adduct with tris(pentafluorophenyl)borane by coordination with the phenolate oxygen, whereas its NHC tautomer 1-(2-phenol)imidazol-2-ylidene reacts with (triphenylphosphine)gold(I) chloride to give the cationic NHC complex [Au(NHC)2][Cl] by coordination with the carbene carbon atom. The anionic N-heterocyclic carbene 1-(2-phenolate)imidazol-2-ylidene gives the complexes [K][Au(NHC−)2], [Rh(NHC−)3] and [Ni(NHC−)2], respectively. Results of four single crystal analyses are presented.
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Lamm, Vladimir, Xiangcheng Pan, Tsuyoshi Taniguchi, and Dennis P. Curran. "Reductions of aldehydes and ketones with a readily available N-heterocyclic carbene borane and acetic acid." Beilstein Journal of Organic Chemistry 9 (April 8, 2013): 675–80. http://dx.doi.org/10.3762/bjoc.9.76.

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Acetic acid promotes the reduction of aldehydes and ketones by the readily available N-heterocyclic carbene borane, 1,3-dimethylimidazol-2-ylidene borane. Aldehydes are reduced over 1–24 h at room temperature with 1 equiv of acetic acid and 0.5 equiv of the NHC-borane. Ketone reductions are slower but can be accelerated by using 5 equiv of acetic acid. Aldehydes can be selectively reduced in the presence of ketones. On a small scale, products are isolated by evaporation of the reaction mixture and direct chromatography.
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Bolt, Daniel A., and Dennis P. Curran. "1-Butyl-3-methylimidazol-2-ylidene Borane: A Readily Available, Liquid N-Heterocyclic Carbene Borane Reagent." Journal of Organic Chemistry 82, no. 24 (November 21, 2017): 13746–50. http://dx.doi.org/10.1021/acs.joc.7b02730.

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Takahashi, Kosuke, Steven J. Geib, Katsuhiro Maeda, Dennis P. Curran, and Tsuyoshi Taniguchi. "Radical trans-Hydroboration of Substituted 1,3-Diynes with an N-Heterocyclic Carbene Borane." Organic Letters 23, no. 3 (January 22, 2021): 1071–75. http://dx.doi.org/10.1021/acs.orglett.0c04284.

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Zhang, Jiaxi, Eike G. Hübner, Jan C. Namyslo, Martin Nieger, and Andreas Schmidt. "Purine-substituted imidazolium mesomeric betaines and their tautomeric N-heterocyclic carbenes. Formation of a cyclic borane adduct." Organic & Biomolecular Chemistry 16, no. 36 (2018): 6801–8. http://dx.doi.org/10.1039/c8ob01916a.

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Dissertations / Theses on the topic "Carbene N-Heterocyclic borane"

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Hippolyte, Laura. "New syntheses of N-heterocyclic carbene-stabilized gold nanoparticles." Electronic Thesis or Diss., Sorbonne université, 2018. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2018SORUS148.pdf.

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Récemment, les carbènes N-hétérocycliques (NHC) ont suscité un intérêt important dans le domaine de la chimie des matériaux. En effet, cette nouvelle catégorie de ligands forme des liaisons très fortes avec une diversité de métaux et leur structure, ainsi que leurs propriétés électroniques, peuvent être adaptées par de la synthèse organique. Cette forte liaison est d’un intérêt particulier dans le domaine des nanoparticules d’or (NP) et des synthèses ont déjà été proposées. En effet, les NPs présentent de nombreuses applications potentielles, par exemple dans les capteurs, en catalyse ou médecine, mais ces applications sont parfois freinées par un manque de stabilité du ligand de surface. Ce travail de thèse s’est concentré sur le développement de nouvelles synthèses de nanoparticules d’or stabilisées par des NHC. D’abord, en revisitant une procédure existante à base de sels d’imidazoliums, ce qui a mené à une synthèse n’utilisant que les composés commerciaux : AuCl et NaBH4 et des halogénures d’imidazolium, facilement obtenus. Une synthèse totalement nouvelle a ensuite été développée en utilisant des NHC-boranes qui sont des adduits de Lewis stables. Nous avons montré pour la première fois que les NHC-boranes peuvent être utilisés comme réactifs "2-en-1" dans la synthèse de NP : comme réducteurs du précurseur d’or et comme source de NHC. Enfin, nous sommes les premiers à décrire la synthèse de NP stabilisées par des carbènes mésoioniques (MIC).Les MICs sont une sous-catégorie des NHCs qui sont préparés par « chimie click » et qui présentent des propriétés électroniques uniques. Un intérêt particulier a été porté à la caractérisation des nanoparticules, notamment par XPS
Over the past decade, N-heterocyclic carbenes (NHC) have drawn considerable interest in the field of materials chemistry. Indeed, this relatively new class of ligands forms strong bonds with a wide range of metals and their structures and electronic properties can be tuned “at-will” through organic synthesis. This strong bond is of particular interest for gold nanoparticles. Indeed, gold nanoparticles have many potential applications, for example in sensors, catalysis or medicine, but those potential applications are sometimes hindered by a lack of stability of the surface ligand. A few syntheses of NHC-stabilized gold nanoparticles have already been described in the literature but each presents their own set of drawbacks. This thesis work has focused on the development of new syntheses of NHC-stabilized gold nanoparticles. First, by revisiting a literature procedure starting from imidazolium salts, we managed to develop a one-pot synthesis starting only from commercially available AuCl, NaBH4 and easily synthesized imidazolium salts. A totally new synthesis was developed using NHC-boranes, which are stable Lewis adducts. Here, we reported for the first time their use as a 2-in-1 reagent, able to reduce the metallic precursor and provide the nanoparticles stabilizing ligands. Finally, we are the first to report a synthesis of gold nanoparticles stabilized by mesoionic carbenes (MIC). MICs are a sub-class of NHCs synthesized by well-known “click-chemistry”, which present unique electronic properties. Throughout this work, special care was taken to characterize the nanoparticles, notably by XPS
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Liu, Ming [Verfasser], and Andreas [Akademischer Betreuer] Schmidt. "Formation of borane adducts and some complexes starting from N-heterocyclic carbenes / Ming Liu ; Betreuer: Andreas Schmidt." Clausthal-Zellerfeld : Technische Universität Clausthal, 2017. http://d-nb.info/1231364963/34.

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Book chapters on the topic "Carbene N-Heterocyclic borane"

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"Product Subclass 42: N-Heterocyclic Carbene Borane Complexes." In Knowledge Updates 2014/4, edited by Banert, Hall, Joule, Moloney, Reissig, and Schaumann. Stuttgart: Georg Thieme Verlag, 2015. http://dx.doi.org/10.1055/sos-sd-101-00511.

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