Academic literature on the topic 'Halogenation Reactions'

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Journal articles on the topic "Halogenation Reactions"

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van Pee, Karl-Heinz. "Halogenating Enzymes for Selective Halogenation Reactions." Current Organic Chemistry 16, no. 21 (2012): 2583–97. http://dx.doi.org/10.2174/138527212804004607.

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Cantillo, David, and C. Oliver Kappe. "Halogenation of organic compounds using continuous flow and microreactor technology." Reaction Chemistry & Engineering 2, no. 1 (2017): 7–19. http://dx.doi.org/10.1039/c6re00186f.

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Holub, Josef, Mario Bakardjiev, and Bohumil Štíbr. "Some Halogenation Reactions of nido-7,8,9,11-P2C2B7H9." Collection of Czechoslovak Chemical Communications 67, no. 6 (2002): 783–90. http://dx.doi.org/10.1135/cccc20020783.

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Halogenations of the diphosphadicarbaborane nido-7,8,9,11-P2C2B7H9 using the AlCl3/CCl4, and I2/AlCl3/C6H6 halogenation systems resulted in the formation of a mixture of mono- and disubstituted derivatives 10-X-nido-7,8,9,11-P2C2B7H8 (for X = Cl and I, yields 6 and 21%, respectively) and 5,10-X2-nido-7,8,9,11-P2C2B7H7 (for X = Cl and I, yields 57 and 46%, respectively). These results show that the halogenation under electrophilic conditions takes place at positions most distant from the P atoms, but at sites adjacent to the CH units. In contrast, the bromination with N-bromosuccinimide in CH2C
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Boyle, Benjamin T., Jeffrey N. Levy, Louis de Lescure, Robert S. Paton, and Andrew McNally. "Halogenation of the 3-position of pyridines through Zincke imine intermediates." Science 378, no. 6621 (2022): 773–79. http://dx.doi.org/10.1126/science.add8980.

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Pyridine halogenation reactions are crucial for obtaining the vast array of derivatives required for drug and agrochemical development. However, despite more than a century of synthetic endeavors, halogenation processes that selectively functionalize the carbon–hydrogen bond in the 3-position of a broad range of pyridine precursors remain largely elusive. We report a reaction sequence of pyridyl ring opening, halogenation, and ring closing whereby the acyclic Zincke imine intermediates undergo highly regioselective halogenation reactions under mild conditions. Experimental and computational me
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Ibrahim, Hasim, and Antonio Togni. "Enantioselective halogenation reactions." Chemical Communications, no. 10 (2004): 1147. http://dx.doi.org/10.1039/b317004g.

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Konaklieva, Monica I., Michele L. Dahl, and Edward Turos. "Halogenation reactions of epoxides." Tetrahedron Letters 33, no. 47 (1992): 7093–96. http://dx.doi.org/10.1016/s0040-4039(00)60844-4.

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Crespo, Lívia T. C., Mônica R. Senra, Pierre M. Esteves та Marcio C. S. de Mattos. "Tribromoisocyanuric Acid as a Green Cohalogenating Reagent: An Efficient Transformation of Alkynes into α,α-Dibromoketones and Vicinal Dibromoalkenes". Letters in Organic Chemistry 16, № 8 (2019): 627–32. http://dx.doi.org/10.2174/1570178615666180803152951.

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The co-halogenation reaction of alkynes with tri-bromoisocyanuric acid in acetic acid, followed by aqueous work-up produced α,α-di-bromoketones (44-84%), while the reaction in aqueous acetonitrile in the presence of KBr produced vicinal di-bromoalkenes (66-86%). The usefulness of the methodology was demonstrated employing green metrics for the comparison of TBCA with analogous N-halo reagents in co-halogenation reactions of alkynes.
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Luu, Truong Giang, Yongju Jung, and Hee-Kwon Kim. "Visible-Light-Induced Catalytic Selective Halogenation with Photocatalyst." Molecules 26, no. 23 (2021): 7380. http://dx.doi.org/10.3390/molecules26237380.

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Halide moieties are essential structures of compounds in organic chemistry due to their popularity and wide applications in many fields such as natural compounds, agrochemicals, and pharmaceuticals. Thus, many methods have been developed to introduce halides into various organic molecules. Recently, visible-light-driven reactions have emerged as useful methods of organic synthesis. Particularly, halogenation strategies using visible light have significantly improved the reaction efficiency and reduced toxicity, as well as promoted reactions under mild conditions. In this review, we have summar
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Lectka, T. "Stereoselective and catalyzed halogenation reactions." Tetrahedron 62, no. 30 (2006): 7149. http://dx.doi.org/10.1016/j.tet.2006.05.035.

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van Pée, Karl-Heinz, and Susanne Unversucht. "Biological dehalogenation and halogenation reactions." Chemosphere 52, no. 2 (2003): 299–312. http://dx.doi.org/10.1016/s0045-6535(03)00204-2.

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Dissertations / Theses on the topic "Halogenation Reactions"

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Yeung, Chi-shun, and 楊智淳. "The experimental and AB initio studies of the photolysis of selected tribromo-compounds and the water assisted dehalogenation reactions of selected isotribromo-compounds." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206479.

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The photochemistry of several tribromo-compounds, R−CBr3 (R = CH2OH, CH2OC(O)CF3, COOH) have been studied by utilizing nanosecond transient absorption (ns-TA) and femtosecond transient absorption spectroscopy. Femtosecond transient absorption experiments showed that isomer species R−CBr2−Br were formed after excitation of R−CBr3 within several picoseconds. The absorption band of the isomers R−CBr2−Br showed a strong solvent dependence upon changing the solvent from cyclohexane to acetonitrile. The absorption wavelength of the proposed isomer intermediates and the spectral shift in cyclohexane
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Itoh, Nobuya. "STUDIES ON THE HALOGENATION REACTIONS CATALYZED BY THE HALOPEROXIDASES FROM CALDARIOMYCES FUMAGO AND CORALLINA PILULIFERA." Kyoto University, 1987. http://hdl.handle.net/2433/78187.

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Tillu, V. H. "Synthesis of thiaprostaglandins and some organic transformations like oxidative halogenation protection deprotection and multicomponent reactions." Thesis(Ph.D.), CSIR- National Chemical Laboratory, Pune, 2006. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3829.

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Petzold, Daniel [Verfasser], and Burkhard [Akademischer Betreuer] König. "Visible Light Mediated Oxidative Halogenation Reactions and Reductive Liberation of Fluorophosgene / Daniel Petzold ; Betreuer: Burkhard König." Regensburg : Universitätsbibliothek Regensburg, 2020. http://d-nb.info/1210701987/34.

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Guan, Xiangguo. "The photochemistry of polyhalomethanes in water and the water-catalyzed dehalogenation reactions of selected isopolyhalomethanes, halogenated methanols and halogenated formaldehydes." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38718960.

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Guan, Xiangguo, and 官向國. "The photochemistry of polyhalomethanes in water and the water-catalyzed dehalogenation reactions of selected isopolyhalomethanes,halogenated methanols and halogenated formaldehydes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38718960.

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Kale, S. M. "Halogenation and isomerization reactions of aromatics over K-L, H-Beta and H-Zsm-5 zeolite catalysts." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2002. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2530.

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Donham, Leah L. "Gas-Phase Studies of Nucleophilic Substitution Reactions: Halogenating and Dehalogenating Aromatic Heterocycles." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5645.

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Halogenated heterocycles are common in pharmaceutical and natural products and there is a need to develop a better understanding of processes used to synthesize them. Although the halogenation of simple aromatic molecules is well understood, the mechanisms behind the halogenation of aromatic heterocycles have been more problematic to elucidate because multiple pathways are possible. Recently, new, radical-based mechanisms have been proposed for heterocycle halogenation. In this study, we examine and test the viability of possible nucleophilic substitution, SN2@X, mechanisms in the halogenat
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Palau, Lluch Gerard. "alpha,beta-difunctionalization of alpha,beta-unsaturated carbonyl compounds through borylation reaction." Doctoral thesis, Universitat Rovira i Virgili, 2015. http://hdl.handle.net/10803/311620.

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Aquesta tesi presenta resultats referits a noves metodologies aplicades cap a la obtenció de productes alfa-funcionalitzats i beta-borilats, que no tenen precedents en la bibliografia, a partir de cetones alfa,beta-insaturatdes. Les funcionalitzacions estudiades han sigut utilitzant fluor, per obtenir alfa-fluoro beta-boryl cetones; halogens, per obtenir alfa-halo beta-boryl cetones (sent els halogens clor i brom); i finalment difuncionalitzar cetones alfa,beta-insaturades per obtenir alfa-aryl beta-boryl cetones, que tal i com es reporta a la tesi, han sigut els intermedis cap a la sintesi de
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Tiwari, Rohit. "COMPUTATIONAL AND SYNTHETIC STUDIES ON ANTIMETABOLITES FOR ANTICANCER-, ANTIVIRAL-,AND ANTIBIOTIC DRUG DISCOVERY." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1267819591.

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Books on the topic "Halogenation Reactions"

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Timonen, Raimo. Kinetics of the reactions of some polyatomic free radicals with Cl₂ and Br₂, and reactions of formyl radicals with O₂, NO₂, Cl₂, Br₂, and H atoms. Suomalainen Tiedeakatemia, 1988.

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Löfås, Stefan. Mechanistic and synthetic investigations of novel halogenation reactions of amidines and enamines with tetrahalomethanes. Uppsala University?, 1985.

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Book chapters on the topic "Halogenation Reactions"

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Clark, J. H. "By Halogenation." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch42.

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Mews, R. "By Halogenation with Metal Halides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch107.

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Mews, R. "By Halogenation with Nonmetal Halides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch110.

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Mews, R. "From Halogenation by Hydrogen Halides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch46.

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Mews, R. "From Halogenation by Oxidizing Halides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch47.

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Mews, R. "From Halogenation by Organic Halides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch51.

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Page, E. M. "By Halogenation by Aluminum Halides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch121.

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Page, E. M., and D. A. Rice. "Halogenation of Substituted Metal Carbonyls." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch162.

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James, B. D. "By Halogenation of the Elements." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch2.

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Edwards, D. A. "By Halogenation of Metal Oxides." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch66.

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Conference papers on the topic "Halogenation Reactions"

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Rothschild, M., J. H. C. Sedlacek, and D. J. Ehrlich. "Laser Photochemical Etching of Molybdenum and Tungsten Thin Films by Surface Halogenation*." In Microphysics of Surfaces, Beams, and Adsorbates. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/msba.1987.mb4.

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Laser direct writing techniques, employing rapidly scanned microchemical deposition and etching reactions, are of importance for advanced nonlithographic fabrication of microelectronics. One class of applications employs these techniques for fine-line in situ alteration of conducting films as a last step in fabrication. Of particular importance for these applications is laser-induced patterning of Mo and W, which are becoming widely used materials for metallization of both Si and GaAs microelectronic devices.
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Wu, Yiting, Weitong Xiao, Jingyang Chen, and Weiling Luan. "BODIPY as a Photosensitizer for Photodynamic Therapy: Mechanisms, Functionalization, and Future Prospects." In 6th International Conference on Structural Health Monitoring and Integrity Management, 8 - 10 November 2024, Zhengzhou. NDT.net, 2025. https://doi.org/10.58286/30976.

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Photodynamic therapy (PDT) has the advantages of strong targeting, few side effects, and little damage to normal tissues, which is considered as a high-quality new non-invasive treatment for cancer treatment. Photosensitizer (PSs), molecular oxygen and light are the three main components of PDT. Boron-dipyrromethene (BODIPY) is a widely used organic fluorescent dye, and its core structure is composed of a central boron atom (B) and two pyrrole rings connected by a methylene bridge. The eight active sites on the parent nucleus allow for a variety of functionalization modifications: positions 2,
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Aggour, Y. A., A. S. Al-Shihri, and M. R. Bazzt. "Recycling of vulcanized waste rubber through halogenations and amination chemical reactions." In SUSTAINABLE DEVELOPMENT 2009. WIT Press, 2009. http://dx.doi.org/10.2495/sdp090822.

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Salama, Tarek, та Saad Elmorsy. "Silicon Assisted Halogenation I: A Convenient Synthesis of β-chloroketones via Reaction of α,β-unsaturated ketones with Tetrachlorosilane-Phenol". У The 13th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2009. http://dx.doi.org/10.3390/ecsoc-13-00181.

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