Academic literature on the topic 'Monohalogenated Derivatives'

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Journal articles on the topic "Monohalogenated Derivatives"

1

Ma, You-An, Zhi-Wei Guo, and Charles J. Sih. "Enzymatic oxidative coupling of monohalogenated tyrosine derivatives." Tetrahedron Letters 39, no. 51 (1998): 9357–60. http://dx.doi.org/10.1016/s0040-4039(98)02183-2.

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2

Ma, You-An, Zhi-Wei Guo, and Charles J. Sih. "ChemInform Abstract: Enzymatic Oxidative Coupling of Monohalogenated Tyrosine Derivatives." ChemInform 30, no. 10 (2010): no. http://dx.doi.org/10.1002/chin.199910208.

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3

Topkaya, Derya, Philippe Arnoux, and Fabienne Dumoulin. "Modulation of singlet oxygen generation and amphiphilic properties of trihydroxylated monohalogenated porphyrins." Journal of Porphyrins and Phthalocyanines 19, no. 10 (2015): 1081–87. http://dx.doi.org/10.1142/s1088424615500893.

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Two of the properties important for photodynamic therapy applications are systematically investigated on a trihydroxylated monohalogenated porphyrin core. Singlet oxygen generation can be increased thanks to the heavy atom effect, frequently provided by the introduction of halogen atoms on the photosensitizer. We compare the effect of the presence of the four halogen atoms with the analogous halogen-free porphyrin. Cell uptake is crucial as well for successful photodynamic outcome and is directly related to the amphiphilicity of the molecule. The five derivatives bearing H, F, Cl, Br or I atom
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4

Štíbr, Bohumil, Zbyněk Janoušek, Jaromír Plešek, Tomáš Jelínek, and Stanislav Heřmánek. "Arachno-6,9-C2B8H14 dicarbaborane and its 1- and 5-monohalogenated derivatives." Collection of Czechoslovak Chemical Communications 52, no. 1 (1987): 103–12. http://dx.doi.org/10.1135/cccc19870103.

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Reduction of nido-5,6-C2B8H12 with sodium tetrahydroborate in ethanolic sodium hydroxide as a new method for preparing arachno-6,9-C2B8H14 is reported. Electrophilic halogenation of 6,9-C2B8H14 occurs at the B(1) site to give a series of 1-X-6,9-C2B8H13 (X = Cl, Br, and I) derivatives. Stereoselective addition of hydrogen halides to the B(5)-C(6) bond in the [6,9-C2B8H10]2- anion results in the formation of 5-X-6,9-C2B8H13 (X = F, Cl, Br, I and 5'-0-6,9-C2B8H13) compounds. Constitution of all compounds isolated is suggested on the basis of their 1H and 11B NMR data and the effects of halogen s
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5

Pacholak, Amanda, Wojciech Smułek, Agata Zdarta, Agnieszka Zgoła-Grześkowiak, and Ewa Kaczorek. "Bacterial Biodegradation of 4-Monohalogenated Diphenyl Ethers in One-Substrate and Co-Metabolic Systems." Catalysts 8, no. 10 (2018): 472. http://dx.doi.org/10.3390/catal8100472.

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The use of diphenyl ether (DE) and its 4-monohalogenated derivatives (4-HDE) as flame retardants, solvents, and substrates in biocide production significantly increases the risk of ecosystem contamination. Their removal is important from the point of view of environmental protection. The aim of this study was to evaluate the degradation processes of DE and 4-HDE by enzymes of the environmental bacterial strains under one-substrate and co-metabolic conditions. The study is focused on the biodegradation of DE and 4-HDE, the enzymatic activity of microbial strains, and the cell surface properties
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6

Nigović, B., B. Kojić-Prodić, S. Antolić, S. Tomić, V. Puntarec, and J. D. Cohen. "Structural studies on monohalogenated derivatives of the phytohormone indole-3-acetic acid (auxin)." Acta Crystallographica Section B Structural Science 52, no. 2 (1996): 332–43. http://dx.doi.org/10.1107/s010876819500838x.

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The physiological properties of the phytohormone (auxin) indole-3-acetic acid (IAA) and its ring substituted derivatives have so far been rationalized by a number of contradictory hypotheses based on incomplete structural data deduced mainly by inspection of molecular models. In order to give more evidence for structure–activity relationships of monohalogenated IAA's, the molecular structures of the natural auxin 4-CI-IAA as well as 5-CI-IAA, 6-CI-IAA, 7-CI-IAA and 5-Br-IAA have been compared, as revealed by X-ray analysis, and molecular mechanics and dynamics. The influence of the substitutio
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7

Schmidt, S., R. M. Wittich, D. Erdmann, H. Wilkes, W. Francke, and P. Fortnagel. "Biodegradation of diphenyl ether and its monohalogenated derivatives by Sphingomonas sp. strain SS3." Applied and Environmental Microbiology 58, no. 9 (1992): 2744–50. http://dx.doi.org/10.1128/aem.58.9.2744-2750.1992.

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8

Lutz, Bert T. G., Erik van der Windt, Jan Kanters, Dieter Klämbt, Biserka Kojić-Prodić, and Michael Ramek. "FTIR spectroscopic study of the phytohormone auxin (Indol-3-ylacetic Acid, IAA) and its n-alkylated and monohalogenated derivatives." Journal of Molecular Structure 382, no. 3 (1996): 177–85. http://dx.doi.org/10.1016/0022-2860(96)09244-7.

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9

Thi Hong Man, Nguyen, Pham Le Nhan, Vien Vo, Duong Tuan Quang, and Nguyen Tien Trung. "An insight into CH···N hydrogen bond and stability of the complexes formed by trihalomethanes with ammonia and its monohalogenated derivatives." International Journal of Quantum Chemistry 117, no. 6 (2016): e25338. http://dx.doi.org/10.1002/qua.25338.

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10

Franken, Andreas, Colin A. Kilner, Mark Thornton-Pett, and John D. Kennedy. "Polyhedral Monocarbaborane Chemistry. A Review of Recent Developments Among C-Aryl Monocarbaborane Systems." Collection of Czechoslovak Chemical Communications 67, no. 7 (2002): 869–912. http://dx.doi.org/10.1135/cccc20020869.

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The Brellochs Reactions, of nido-B10H14 with aromatic aldehydes to give [6-Ar-nido-6-CB9H11]- anions in high yield, now permits excellent entries into C-aryl monocarbaborane chemistry, which is reviewed. From [6-Ar-nido-6-CB9H11]-, one-step cluster-closure, cluster-Aufbau, or cluster-dismantling reactions yield [1-Ph-closo-1-CB11H11]-, [7-Ph-nido-7-CB10H12]-, [1-Ph-closo-1-CB9H9]-, [2-Ph-closo-2-CB9H9]-, [4-closo-4-PhCB8H8]- and [6-Ph-arachno-6-CB8H13]. Second-step reactions involving these products yield [2-Ph-closo-2-CB10H10]-, [6-Ph-nido-6-CB8H11], [1-Ph-closo-1-CB7H7]- and [4-Ph-closo-4-CB
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