Academic literature on the topic 'Halogenated derivatives'

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Journal articles on the topic "Halogenated derivatives"

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Akune, Yoko, Risa Hirosawa, Atsushi Koseki, and Shinya Matsumoto. "Role of halogen substituents in a series of polymorphic 2,5-diamino-3,6-dicyanopyrazine derivatives with highly flexible groups." Zeitschrift für Kristallographie - Crystalline Materials 232, no. 5 (2017): 395–405. http://dx.doi.org/10.1515/zkri-2016-2007.

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AbstractThe crystal structures of the ortho-X-benzyl derivatives, where X=F, Cl, Br, I, and Me, of 2,5-bis(N,N-dibenzylamino)-3,6-dicyanopyrazine dyes (C34H24N6X4) were analysed to evaluate the effect of a systematic series of structures on the occurrence of polymorphism. Detailed crystal structure analysis indicated that the thermally stable forms of the polymorphic derivatives (Cl and Br derivatives) were close-packed, whereas those of the non-polymorphic derivatives (F and I derivatives) were stabilised by an intermolecular interaction involving the ortho-substituents. In the thermally meta
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Stehmann, A., and H. Fr Schröder. "Derivatisation of 4-nonylphenol and bisphenol A with halogenated anhydrides." Water Science and Technology 50, no. 5 (2004): 115–18. http://dx.doi.org/10.2166/wst.2004.0317.

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The aim of this work is to synthesize and characterise the halogenated derivatives of the endocrine disrupting compounds (EDCs) 4-nonylphenol (4-NP) and bisphenol A (BPA). Characterisation was performed after gas chromatographic (GC) separation on-line coupled to mass spectrometric (MS) detector and a Fourier Transform Infrared (FTIR) spectroscopic detector. Further structure elucidation was done applying Nuclear Magnetic Resonance spectroscopy (NMR). Two different approaches for the preparation of derivatives were evaluated. At first trifluoroacetyl derivatives were synthesized by the reactio
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WORSHAM, P. R. "ChemInform Abstract: Halogenated Derivatives." ChemInform 24, no. 32 (2010): no. http://dx.doi.org/10.1002/chin.199332295.

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Hurtová, Martina, Kristýna Káňová, Simona Dobiasová, et al. "Selectively Halogenated Flavonolignans—Preparation and Antibacterial Activity." International Journal of Molecular Sciences 23, no. 23 (2022): 15121. http://dx.doi.org/10.3390/ijms232315121.

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A library of previously unknown halogenated derivatives of flavonolignans (silybins A and B, 2,3-dehydrosilybin, silychristin A, and 2,3-dehydrosilychristin A) was prepared. The effect of halogenation on the biological activity of flavonolignans was investigated. Halogenated derivatives had a significant effect on bacteria. All prepared derivatives inhibited the AI-2 type of bacterial communication (quorum sensing) at concentrations below 10 µM. All prepared compounds also inhibited the adhesion of bacteria (Staphyloccocus aureus and Pseudomonas aeruginosa) to the surface, preventing biofilm f
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Buchta, Vladimír, Milan Pour, Petra Kubanová, et al. "In Vitro Activities of 3-(Halogenated Phenyl)-5-Acyloxymethyl- 2,5-Dihydrofuran-2-ones against Common and Emerging Yeasts and Molds." Antimicrobial Agents and Chemotherapy 48, no. 3 (2004): 873–78. http://dx.doi.org/10.1128/aac.48.3.873-878.2004.

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ABSTRACT Three 3-(halogenated phenyl)-5-acyloxymethyl-2,5-dihydrofuran-2-ones were evaluated for activity against 191 strains of common and emerging yeasts and Aspergillus species by the broth microdilution test performed according to NCCLS guidelines. The furanone derivatives displayed broad-spectrum in vitro activity against potentially pathogenic yeasts and molds, especially Aspergillus spp. (MIC ≤ 2.0 μg/ml) and fluconazole-resistant yeast isolates, including Candida glabrata and Saccharomyces cerevisiae. The 4-bromophenyl derivative was the most effective derivative against the majority o
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B. Bakare, S. "Synthesis and biological evaluation of some hybrid 2-quinolinone derivatives containing cinnamic acid as anti-breast cancer drugs." Bulletin of the Chemical Society of Ethiopia 35, no. 3 (2022): 551–64. http://dx.doi.org/10.4314/bcse.v35i3.7.

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ABSTRACT. A new series of hybrid 2-quinolinone derivatives were synthesized by using 7-hydroxy-4-methyl-1-amino-quinolin-2-one (2) and cinnamic acid. Hybrid halogenated 2-quinolinone derivatives (3-(7-hydroxy-4-methyl-3,6,8-tribromo-2-oxo-2H-quinolin-1-ylamino)-3-phenyl acrylic acid (4) and 3-(7-acetoxy-4-methyl-3,6,8-tribromo-2-oxo-1H-quinolin-1-ylamino)-3-phenyl acrylic acid (7)) were prepared via the halogenation of 3-(7-hydroxy-4-methyl-2-oxo-2H-quinolin-1-ylamino)-3-phenyl acrylic acid (3) with bromine to give compound 4 with acetic anhydride led to the formation of hydride halogenated 2-
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Youssef-Saliba, Sparta, and Yannick Vallée. "Organo-Halogens and their Possible Involvement in Prebiotic Chemistry." Current Organic Chemistry 24, no. 7 (2020): 774–84. http://dx.doi.org/10.2174/1385272824999200420074204.

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: In this review, we examined the possibility that some halogenated organic derivatives were used in the primitive ocean at the beginning of life on Earth. Firstly, we described the existence of extraterrestrial halogenated molecules, then we studied their nonbiological syntheses on the present Earth, especially in volcanic environments. In order to demonstrate the diversity of today’s halogenated biomolecules, representative examples are given and the biosynthesis of some of them is summarized. Finally, we proposed two aspects of the chemistry of halogenated compounds that may have been usefu
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Berrio Escobar, Jhon, MH Pastrana Restrepo, E. Galeano Jaramillo, DM Márquez Fernández, ME Márquez Fernández, and A. Martínez Martínez. "Synthesis and cytotoxic activity of per-acetylated and halogenated derivatives of nucleosides in breast cancer cells." Ars Pharmaceutica (Internet) 58, no. 4 (2017): 145–54. http://dx.doi.org/10.30827/ars.v58i4.6441.

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Objectives. To make the synthesis of halogenated derivatives on the nitrogenous base and their respective acyl ester and amide type derivatives for all hydroxyl and amine groups of the uridine and cytarabine nucleosides, and evaluate cytotoxicity against breast cancer cell line. Methods. First, it was accomplished the halogenation reaction on the 5-position of the nitrogenous base, subsequently, the ester and amide derivatives were performed for all hydroxyl and amine group present in the nucleosides. Besides, the uridine acetonide derivatives as prepared by acid catalysis. The products were c
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Li, Chao, and Dayong Shi. "Structural and Bioactive Studies of Halogenated Constituents from Sponges." Current Medicinal Chemistry 27, no. 14 (2020): 2335–60. http://dx.doi.org/10.2174/0929867325666181112092159.

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: Marine organisms are abundant sources of bioactive natural products. Among metabolites produced by sponges and their associated microbial communities, halogenated natural compounds accounted for an important part due to their potent biological activities. The present review updates and compiles a total of 258 halogenated organic compounds isolated in the past three decades, especially brominated derivatives derived from 31 genera of marine sponges. These compounds can be classified as the following classes: brominated polyunsaturated lipids, nitrogen compounds, brominated tyrosine derivative
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Jesus, Ana, Marta Correia-da-Silva, Carlos Afonso, Madalena Pinto, and Honorina Cidade. "Isolation and Potential Biological Applications of Haloaryl Secondary Metabolites from Macroalgae." Marine Drugs 17, no. 2 (2019): 73. http://dx.doi.org/10.3390/md17020073.

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Macroalgae have been reported as an important source of halogenated aromatic secondary metabolites, being the majority of these derivatives isolated from red algae. Halophenols and haloindoles are the most common haloaryl secondary metabolites isolated from these marine organisms. Nevertheless, some halogenated aromatic sesquiterpenes and naphthalene derivatives have also been isolated. Most of these secondary metabolites showed interesting biological activities, such as antitumor, antimicrobial, antidiabetic, and antioxidant. This review describes in a systematic way the distribution and natu
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Dissertations / Theses on the topic "Halogenated derivatives"

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Wang, Hao. "Artifical Light-Driven Chiral Molecular Switches Based on Halogenated and Cyclic Azo-Binaphthyl Derivatives." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent1586518390107867.

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Gogic, Kemal [Verfasser], Jürgen [Akademischer Betreuer] Schatz, Jürgen [Gutachter] Schatz та Evgeny [Gutachter] Kataev. "Syntheses of Multiple Halogenated Organic Derivatives and Supramolecular Investigation of σ-hole Electrostatic Interaction / Kemal Gogic ; Gutachter: Jürgen Schatz, Evgeny Kataev ; Betreuer: Jürgen Schatz". Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2021. http://d-nb.info/1239898509/34.

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Venská, Petra. "Odstranění organického znečistění z vody s využitím UV záření." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-295686.

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This diploma thesis focuses on possibilities of applications of UV radiation to remove pollutants from water. It summarizes sources of UV radiation and list their benefits and properties. The thesis characterizes so called advanced oxidation processes using UV light. Degradation pathways od pyridine and its derivatives especially halogenated pyridines are described. The photodegradability of pyridine and a rate of this reaction in model water is investigated in the experimental part. Also, the effect of concentration and dose of H2O2 is assessed. Gas chromatography was used to determinate conc
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Whittell, Louise Renee'. "The synthesis and biological evaluation of novel analogues of isocryptolepine." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/2558.

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This thesis investigates the potential of the alkaloid isocryptolepine 16 as a lead compound in antimalarial drug development. Fifteen derivatives of the parent alkaloid were prepared and fully characterised, twelve of which were novel compounds. A select group of compounds were subsequently evaluated for both antimalarial activity and cytotoxicity.Three previously reported synthetic methodologies to the parent alkaloid were initially investigated; wherein two approaches were able to be reproduced or improved. These two synthetic methodologies were subsequently applied to the preparation of de
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Kunze, Kurt, Hendrik Niemann, Susanne Ueberlein, et al. "Brominated Skeletal Components of the Marine Demosponges, Aplysina cavernicola and Ianthella basta: Analytical and Biochemical Investigations." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-127045.

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Demosponges possess a skeleton made of a composite material with various organic constituents and/or siliceous spicules. Chitin is an integral part of the skeleton of different sponges of the order Verongida. Moreover, sponges of the order Verongida, such as Aplysina cavernicola or Ianthella basta, are well-known for the biosynthesis of brominated tyrosine derivates, characteristic bioactive natural products. It has been unknown so far whether these compounds are exclusively present in the cellular matrix or whether they may also be incorporated into the chitin-based skeletons. In the present
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Books on the topic "Halogenated derivatives"

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D, Beritic-Stahuljak, Millischer R, Valic F, International Program on Chemical Safety., United Nations Environment Programme, and World Health Organization, eds. Partially halogenated chlorofluorocarbons (ethane derivatives). World Health Organization, 1992.

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D, Beritić-Stahuljak, Valic F, World Health Organization, and United Nations Environment Programme, eds. Partially halogenated chlorofluorocarbons (methane derivatives). World Health Organization, 1991.

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Phenols, Phenol-Alcohol The. 2000 World Market Forecasts for Imported Phenols, Phenol-Alcohol, and Halogenated Derivatives. Icon Group International, 2000.

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Group, Research. The 2000 World Market Forecasts for Imported Acyclic Alcohols and Halogenated Derivatives. Icon Group International, 2000.

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Parker, Philip M. The 2007 Import and Export Market for Halogenated Derivatives of Hydrocarbons in India. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Halogenated Derivatives of Hydrocarbons in China. ICON Group International, Inc., 2006.

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Parker, Philip M. The World Market for Halogenated Derivatives of Hydrocarbons: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Halogenated Derivatives of Hydrocarbons in United States. ICON Group International, Inc., 2006.

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The Acyclic Alcohols and Halogenated Der, The Acyclic Alcohols, and Halogenated Derivatives Research Group. The 2000 World Forecasts of Acyclic Alcohols and Halogenated Derivatives Export Supplies (World Trade Report). 2nd ed. Icon Group International, 2000.

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Phenols, Phenol-Alcohol The, Halogenated Derivatives Research Group, and Phenol-Alcohol The Phenols. The 2000 World Forecasts of Phenols, Phenol-alcohol, and Halogenated Derivatives Export Supplies (World Trade Report). 2nd ed. Icon Group International, 2000.

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Book chapters on the topic "Halogenated derivatives"

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Chivers, T. "Halogenated Derivatives of (SN)X." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145326.ch86.

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Kirk, Kenneth L. "Biochemistry of Halogenated Analogues of Steroids, Isoprenyl Derivatives, and Other Terpenoids." In Biochemistry of Halogenated Organic Compounds. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-4605-1_3.

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Nair, M. D., and M. S. Premila. "Halogenated and Metallated Isoquinolines and Their Hydrogenated Derivatives." In Chemistry of Heterocyclic Compounds: A Series Of Monographs. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470187128.ch1.

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Ho, Kitty K. K., Samuel K. Kutty, Daniel Chan, Renxun Chen, Mark D. P. Willcox, and Naresh Kumar. "Development of Fimbrolides, Halogenated Furanones and their Derivatives as Antimicrobial Agents." In Antibacterial Surfaces. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18594-1_8.

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Wittich, Rolf-Michael. "Aerobic Degradation by Bacteria of Dibenzo-p-Dioxins, Dibenzofurans, Diphenyl Ethers and Their Halogenated Derivatives." In Biodegradation of Dioxins and Furans. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-06068-1_1.

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Rickenbacher, U., S. Jordan, and J. D. McKinney. "Structurally Specific Interaction of Halogenated Dioxin and Biphenyl Derivatives with Iodothyronine-5'-deiodinase in Rat Liver." In ACS Symposium Series. American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0413.ch022.

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"Halogenated Derivatives." In Acetic Acid and its Derivatives. CRC Press, 1992. http://dx.doi.org/10.1201/9781482277272-26.

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Witulski, B., and C. Alayrac. "From β-Halogenated Enamines." In Three Carbon-Heteroatom Bonds: Ketenes and Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-024-01018.

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Zhu, H., and Q. Fan. "22.7.2.2 Ortho Esters and Halogenated Derivatives (Update 2024)." In Knowledge Updates 2024/3. Georg Thieme Verlag KG, 2024. http://dx.doi.org/10.1055/sos-sd-122-00258.

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Abstract This review is an update to the earlier Science of Synthesis contribution (Section 22.7.2) and describes methods for the formation of ortho esters and halogenated derivatives reported in the period 2005–2023. The first part focuses on recent advances in the synthesis of 1,1-dihalogenated ethers and 1-halogenated acetals. The second part of this review covers the latest synthetic strategies to access various functional ortho esters.
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Witulski, B., and C. Alayrac. "Elimination Reactions of Halogenated Enamines." In Three Carbon-Heteroatom Bonds: Ketenes and Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-024-01017.

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Conference papers on the topic "Halogenated derivatives"

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Cheng, L., R. C. May, and K. M. Given. "A New Environmentally-Preferred Copper Corrosion Inhibitor." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99101.

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Abstract Copper and its alloys have excellent heat transfer properties and are widely used in industrial cooling water systems. A corrosion inhibitor, however, is needed to prevent equipment failures and to reduce the discharge of toxic copper compounds into the environment. Although azoles such as benzotriazole and tolyltriazole have been used to protect copper alloys from corrosion, they react with oxidizing halogens which are commonly used to control microbiological activity. Their reaction with chlorine, for example, produces species that are not protective to copper. The inhibitor films f
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Ievtukhov, Vladyslav, Michal Monka, Estera Hoffman-Rusin, Piotr Bojarski, and Illia Serdiuk. "Investigations of halogenated derivatives of diphenylsulphone thermally activated delayed fluorescent emitters." In Organic and Hybrid Light Emitting Materials and Devices XXVI, edited by Tae-Woo Lee, Franky So, and Chihaya Adachi. SPIE, 2022. http://dx.doi.org/10.1117/12.2646463.

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Sousa, Damião Sampaio de, Anthony Barbosa Belarmino, Victor Moreira de Oliveira, Francisco Rogênio da Silva Mendes, Emmanuel Silva Marinho, and Gabrielle Silva Marinho. "In silico ecotoxicology and molecular docking of halogenated and oxygenated rotenoid derivatives." In Anais do Congresso Brasileiro Interdisciplinar em Ciência e Tecnologia. Even3, 2023. http://dx.doi.org/10.29327/1298891.4-245.

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