Academic literature on the topic 'Dehydrohalogenation'

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Journal articles on the topic "Dehydrohalogenation"

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Halton, B., CJ Randall, GJ Gainsford, and WT Robinson. "Studies in the Cycloproparene Series: Competitive Pathways in the Dehydrohalogenation Route to 2-Halobicyclo[4.1.0]Hepta-1,3,5-Trienes." Australian Journal of Chemistry 40, no. 3 (1987): 475. http://dx.doi.org/10.1071/ch9870475.

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The (1α,2β,3α,6α)-2,3,7,7-tetrahalobicyclo[4.1.0]heptanes (8a-c), whose structures have been determined by X-ray methods, give 2-halobicyclo[4.1.0]hepta-1,3,5-trienes (5) upon dehydrohalogenation. The 'mixed' halide (8c) and partly labelled [7-13c]-(8b,c) have revealed the presence of competing pathways in these conversions. By comparison, dehydrohalogenations of the (1α,3α,4β,6α)-3,4,7,7-tetrahalobicyclo[4.1.0]heptanes (3) give unrearranged 3-halobicyclo[4.1.0]-hepta-1,3,5-trienes (4).
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Suárez, Angela R., Alejandra G. Suárez, Sandra E. Martín, and María R. Mazzieri. "Dehydrobromination of 1,1-diaryl-1,2-dibromoalkanes catalyzed by iron and iron bromides. An ion-pair-mediated reaction?" Canadian Journal of Chemistry 73, no. 1 (1995): 56–60. http://dx.doi.org/10.1139/v95-008.

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The participation of ion-paired Lewis acid/Lewis base in the dehydrohalogenations of 1,2-dibromo-1,1 -diarylalkanes catalyzed by Fe0 and by Fe(II) and Fe(III) bromides was investigated. The reactivities of the catalyst employed were correlated with their chemical hardness. The influence of para substituents on the phenyl rings of the substrates and the results obtained in Lewis-acid-catalyzed and thermal dehydrobromination of the same compounds were compared. The experimental results could not be explained in terms of a Lewis-acid-catalyzed dehydrobromination. Keywords: dehydrohalogenation, br
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Ahubelem, Nwakamma, Mohammednoor Altarawneh, and Bogdan Z. Dlugogorski. "Dehydrohalogenation of ethyl halides." Tetrahedron Letters 55, no. 35 (2014): 4860–68. http://dx.doi.org/10.1016/j.tetlet.2014.07.009.

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Bock, Hans, and Hans Peter Wolf. "Oberflächen-Reaktionen, 9 Dehydrohalogenierungen von Halogenkohlenwasserstoffen an Raney-Nickel / Surface Reactions, 9 Dehydrohalogenation of Halohydrocarbons at Raney Nickel." Zeitschrift für Naturforschung B 44, no. 6 (1989): 699–714. http://dx.doi.org/10.1515/znb-1989-0614.

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Raney nickel, a highly reactive and air-sensitive solid, if prepared and investigated under oxygen-free conditions, exhibits interesting catalytic properties. Using photoelectron spectroscopy for real-time gas analysis in a flow reactor, the following results are obtained with alkyl and acylhalides: Dehydrohalogenation temperatures are lowered relative to thermal HHal elimination up to 350 K. Monochloro and bromo propanes and butenes yield propene and butadiene, respectively. 1,1-Dichloro ethane or 1,1-dibromo propane only split off one HHal and form chloroethene or 1-bromopropene-2. HCl elimi
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Ho, Po-Yuen, Hartmut Komber, Kilian Horatz, et al. "Synthesis and characterization of a semiconducting and solution-processable ruthenium-based polymetallayne." Polymer Chemistry 11, no. 2 (2020): 472–79. http://dx.doi.org/10.1039/c9py01090d.

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Ji, Wenzhi, Chen-Long Li, Hui Chen, Zhi-Xiang Yu, and Xuebin Liao. "A newly designed heterodiene and its application to construct six-membered heterocycles containing an N–O bond." Chemical Communications 55, no. 80 (2019): 12012–15. http://dx.doi.org/10.1039/c9cc05694g.

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Martí-Rujas, Javier, and Fang Guo. "Dehydrohalogenation reactions in second-sphere coordination complexes." Dalton Transactions 50, no. 34 (2021): 11665–80. http://dx.doi.org/10.1039/d1dt02099d.

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Santandrea, Jeffrey, Eric Godin, and Shawn K. Collins. "A synthetic guide to alkynyl sulfides." Organic & Biomolecular Chemistry 18, no. 26 (2020): 4885–93. http://dx.doi.org/10.1039/d0ob00908c.

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Alkynyl sulfides can be prepared via dehydrohalogenation, nucleophilic and electrophilic thiol alkynylation and catalytic C<sub>sp</sub>–S bond formation. Each method presents certain advantages and limitations.
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Navrátil, Michal, Erica N. Faria, Geve Panahy, Ivana Císařová, Jose M. Goicoechea, and Petr Štěpnička. "Novel ferrocenyl functionalised phosphinecarboxamides: synthesis, characterisation and coordination." Dalton Transactions 49, no. 25 (2020): 8645–51. http://dx.doi.org/10.1039/d0dt01908a.

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Evsyukov, S. E., Yu P. Kudryavtsev, and Yu V. Korshak. "Chemical dehydrohalogenation of halogen-containing polymers." Russian Chemical Reviews 60, no. 4 (1991): 373–90. http://dx.doi.org/10.1070/rc1991v060n04abeh001083.

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Dissertations / Theses on the topic "Dehydrohalogenation"

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Schwehr, Kathleen Ann. "Speciation and transport of anthropogenic 129Iodine and natural 127Iodine in surface and subsurface environments." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/1317.

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Iodine is a biophilic element with one natural long-lived isotope, 129I (t1/2= 15.6 million years), and one stable isotope, 127I. The inventory of 129I in surface environments has been overwhelmed by anthropogenic releases over the past 50 years. The objective of this study is to utilize the elevated concentration and biophilic nature of 129I and the isotopic ratio of iodine (129I/127I) as a tracer of water mass movement and organic matter. Additionally, the significantly elevated values of 129I/127I could provide a geochronometer, similar to the way 14C is used, particularly for terrestrial o
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Vadecard, Jérôme. "Alcoolates chiraux en synthèse asymétrique : accès à des composés à chiralité axiale par déshydrohalogénation énantiosélective." Rouen, 1994. http://www.theses.fr/1994ROUES053.

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Le potentiel des alcoolates chiraux lorsqu'ils sont utilisés en tant que base dans une réaction de synthèse asymétrique a été démontré pour la première fois, la réaction modèle étudiée étant la déshydrohalogénation énantiosélective de substrats prochiraux halogénés. Ainsi, l'accès à l'acide 4-tBu-cyclohexylidène acétique optiquement enrichi a été réalisé avec une sélectivité supérieure (ee: 90%) à celle décrite dans la littérature (ee: 82%) qui utilisait des amidures de lithium chiraux. D'autre part, une stratégie de synthèse des 2-alkyl et 2-aryl-5-bromométhylène-1,3-dioxanes optiquement enri
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Patil, Pratap Tukaram. "Nanoscopic metal fluoride based novel solid catalysts." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2009. http://dx.doi.org/10.18452/16021.

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Metallfluoride sind dank ihrer hohen chemischen und thermischen Stabilität, insbesondere bei Reaktionen unter Beteiligung von hoch korrosiven Gasen (HF, HCl, Cl2, F2) den entsprechenden Oxiden überlegen. Über den Sol-Gel Prozess synthetisierte Produkte weisen oft spezifische, zum Teil sehr unterschiedliche Eigenschaften im Vergleich zu klassisch hergestellten Verbindungen auf. In dieser Arbeit wurde der Sol-Gel Prozess zur Herstellung von binären Fluoriden (AlF3, MgF2, CaF2, CuF2 und FeF3) genutzt und zum Teil weiter entwickelt sowie das Synthesepotential dieser Methode als Zugang für komplex
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Hiouni, Abdelaziz. "Première synthèse des α-lithioacétals de cétène : condensation avec les dérivés carbonylés". Rouen, 1996. http://www.theses.fr/1996ROUES074.

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Pour la première fois des alpha-lithioacétals de cétène ont été obtenus. Ils ont été préparés par échange brome-lithium à partir de bromoacétals de cétène. La condensation de ces réactifs à fonction ester masquée conduit soit à des esters α, β-éthyléniques (hydrolyse acide), soit à des β-hydroxyesters (hydrolyse basique). De plus la protonation de l'intermédiaire de condensation lithié par le bromure de tertio-butyle conduit a des β-hydroxyacétals de cétène, non décrits dans la littérature. Dans certains cas la supériorité de ces lithioacétals de cétène par rapport aux réactifs classiques (Ref
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Armbruster, Florian. "Darstellung bor- und phosphorhaltiger Ringe durch Reaktionen von Halogenboranen und -phosphanen mit Bis(tert.-butyl-methyl)ketazin." Doctoral thesis, [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973984112.

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Amadji, Morad. "Catalyse asymétrique à l'aide d'alcoolates chiraux : synthèse de chirons en série 1,3-dioxanes." Rouen, 1997. http://www.theses.fr/1997ROUES011.

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La nature du groupement en position 2 des 2-alkyl ou 2-aryl-5-méthylène-1,3-dioxanes permet d'accéder exclusivement à un seul isomère dibromo-1,3-dioxane Cis ou Trans correspondant. La déshydrohalogénation énantiosélective, à l'aide d'alcoolate de la N-méthyléphédrine, des composés dibromo-1,3-dioxanes Trans conduit à de très hautes séléctivités (ee>98%) en particulier lorsque le substituant en position 2 est un groupement aryle. Une version catalytique, performante et novatrice, de la déshydrohalogénation énantiosélective, par un système relais mettant en jeu une quantité catalytique de métha
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HUANG, LING-ZHU, and 黃鈴銖. "The study of dehydrohalogenation with polyethylene glycols as phase transfer catalysts." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/21369923885988912775.

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Books on the topic "Dehydrohalogenation"

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Parcell, Robert Ford 1922. Dehydrohalogenation of Halo-Alkenylamines with Sodium Amide in Liquid Ammonia. Creative Media Partners, LLC, 2021.

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Book chapters on the topic "Dehydrohalogenation"

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Gooch, Jan W. "Dehydrohalogenation." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_3395.

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Evsyukov, S. E. "Chemical Dehydrohalogenation of Polymers." In Physics and Chemistry of Materials with Low-Dimensional Structures. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4742-2_7.

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Yabe, Akira. "Photo- and Laser-Induced Dehydrohalogenation of Polymers." In Physics and Chemistry of Materials with Low-Dimensional Structures. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4742-2_8.

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"Dehydrohalogenation." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_3341.

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Pollex, A. "Dehydrohalogenation." In X-Ene-X (X=F, Cl, Br, I, O, S, Se, Te, N, P), Ene-Hal, and Ene-O Compounds. Georg Thieme Verlag KG, 2008. http://dx.doi.org/10.1055/sos-sd-032-00441.

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Gaumont, A. C., and M. Gulea. "Dehydrohalogenation." In Ene-X Compounds (X=S, Se, Te, N, P). Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-033-00757.

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Schramm, M. P. "Dehydrohalogenation." In 1,3-Dienes. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-046-00250.

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Williams, A. C., and N. Camp. "Dehydrohalogenation." In Six-Membered Hetarenes with One Chalcogen. Georg Thieme Verlag KG, 2003. http://dx.doi.org/10.1055/sos-sd-014-00518.

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Ogasawara, M. "Dehydrohalogenation." In Cumulenes and Allenes. Georg Thieme Verlag KG, 2008. http://dx.doi.org/10.1055/sos-sd-044-00048.

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Nishinaga, T. "Dehydrohalogenation." In Monocyclic Arenes, Quasiarenes, and Annulenes. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-045-00342.

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