Academic literature on the topic 'Halogenated pyridine derivatives'

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Journal articles on the topic "Halogenated pyridine derivatives"

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Eldin, Sanaa M. "Cyanothioacetamide and its Derivatives in Heterocyclic Synthesis: A New Route for the Synthesis of Several Pyridine and Thieno[2,3-b]pyridine Derivatives and their Biological Evaluation." Zeitschrift für Naturforschung B 54, no. 5 (1999): 674–80. http://dx.doi.org/10.1515/znb-1999-0517.

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Several new pyridine and thieno[2,3-b]pyridine derivatives were synthesized via the reactions of some pyridinethiones, obtained by the action of acetylacetone on some thiocarboxamidocinnamonitriles, with halogenated esters and ketones. Structures were established based on elemental and spectral data. All the synthesized compounds were tested for their biological activity.
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Li, Changfu, Yingying Chai, Xinglong Zhou, et al. "Choice of hydrogen bonds or halogen bonds by 2-halogenated 5-morpholinomethylphenyl triazolo[1,5-a]pyridine." CrystEngComm 20, no. 22 (2018): 3006–10. http://dx.doi.org/10.1039/c8ce00423d.

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The crystal structures of halogenated 1,2,4-triazolo[1,5-a]pyridine derivatives disclose intriguing structural chemistry features dictated by the formation of either hydrogen bonds (HBs) or halogen bonds (XBs).
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Bremner, D. H., A. D. Dunn, and K. A. Wilson. "The Synthesis of Thienopyridines from ortho-Halogenated Pyridine Derivatives." Synthesis 1992, no. 06 (1992): 528–30. http://dx.doi.org/10.1055/s-1992-26153.

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Sharif, Muhammad, Khurram Shoaib, Shahzad Ahmed, et al. "Synthesis of functionalised fluorinated pyridine derivatives by site-selective Suzuki-Miyaura cross-coupling reactions of halogenated pyridines." Zeitschrift für Naturforschung B 72, no. 4 (2017): 263–79. http://dx.doi.org/10.1515/znb-2016-0213.

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AbstractThe Suzuki-Miyaura reaction of 2,6-dichloro-3-(trifluoromethyl)pyridine with 1 equiv of arylboronic acids resulted in site-selective formation of 2-aryl-6-chloro-3-(trifluoromethyl)pyridine. Due to electronic reasons, the reaction takes place at the sterically more hindered position. The selectivity was rationalised by DFT calculations. The one-pot reaction with two different arylboronic acids afforded 2,6-diaryl-3-(trifluoromethyl)pyridine containing two different aryl substituents. The reactions proceeded smoothly in the absence of phosphine ligands. In addition, Suzuki-Miyaura react
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Bremner, D. H., A. D. Dunn, K. A. Wilson, K. R. Sturrock, and G. Wishart. "The Synthesis of Thienopyridines from ortho-Halogenated Pyridine Derivatives; Part 2." Synthesis 1997, no. 08 (1997): 949–52. http://dx.doi.org/10.1055/s-1997-1289.

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Bremner, D. H., A. D. Dunn, K. A. Wilson, K. R. Sturrock, and G. Wishart. "The Synthesis of Thienopyridines from ortho-Halogenated Pyridine Derivatives. Part 3." Synthesis 1998, no. 08 (1998): 1095–97. http://dx.doi.org/10.1055/s-1998-2124.

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BREMNER, D. H., A. D. DUNN, and K. A. WILSON. "ChemInform Abstract: The Synthesis of Thienopyridines from ortho-Halogenated Pyridine Derivatives." ChemInform 23, no. 41 (2010): no. http://dx.doi.org/10.1002/chin.199241168.

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Antunes, Edith M., and Tebello Nyokong. "Synthesis and Photophysical Properties of Tetra- and Octasubstituted Phosphorous Oxide Triazatetrabenzcorrole Photosensitizers." Metal-Based Drugs 2008 (March 3, 2008): 1–9. http://dx.doi.org/10.1155/2008/498916.

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The synthesis of phosphorous oxide triazatetrabenzcorroles (TBC) tetra- (9, 11) or octa- (13) substituted on the ring with halogenated functional groups is reported. The complexes are not aggregated in dimethylsulfoxide (DMSO) and show solubility in solvents such as pyridine. The Q band absorption spectra of the complexes are red-shifted compared to unsubstituted PTBC. The latter complex shows a large triplet lifetime (1.7 milliseconds), higher than for MPc derivatives. The chlorinated derivatives show good triplet yields (ΦT∼ 0.46 and 0.36) and relatively long lifetimes (256 and 452 microseco
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Zaki, Dr Remon M., Prof Adel M. Kamal El-Dean, Dr Nermin A. Marzouk, Prof Jehan A. Micky, and Mrs Rasha H. Ahmed. "A FACILE SYNTHESIS AND REACTIONS OF AMINO SELENOLO[2,3-b]PYRIDINE CARBOXYLATE." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 1 (2015): 3910–18. http://dx.doi.org/10.24297/jac.v12i1.845.

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Incorporating selenium metal bonded to the pyridine nucleus was achieved by the reaction of selenium metal with 2-chloropyridine carbonitrile 1 in the presence of sodium borohydride as reducing agent. The resulting non isolated selanyl sodium salt was subjected to react with various α-halogenated carbonyl compounds to afford the selenyl pyridine derivatives 3a-f which compounds 3a-d underwent Thorpe-Ziegler cyclization to give 1-amino-2-substitutedselenolo[2,3-b]pyridine compounds 4a-d, while the other compounds 3e,f failed to be cyclized. Basic hydrolysis of amino selenolo[2,3-b]pyridine carb
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BREMNER, D. H., A. D. DUNN, K. A. WILSON, K. R. STURROCK, and G. WISHART. "ChemInform Abstract: The Synthesis of Thienopyridines from ortho-Halogenated Pyridine Derivatives. Part 2." ChemInform 29, no. 4 (2010): no. http://dx.doi.org/10.1002/chin.199804133.

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Dissertations / Theses on the topic "Halogenated pyridine derivatives"

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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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