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Journal articles on the topic 'Halo acid'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Vafina, G. F., A. R. Uzbekov, F. Z. Galin, and M. S. Yunusov. "Synthesis of Halo-substituted Framework Derivatives of Quinopimaric Acid." Chemistry of Natural Compounds 49, no. 6 (2014): 1035–38. http://dx.doi.org/10.1007/s10600-014-0817-z.

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2

Perevalov, V. P., Yu A. Manaev, L. I. Baryshnenkova, E. �. Kanep, M. A. Andreeva, and B. I. Stepanov. "Nitration of 4-halo-1-methylpyrazoles in sulfuric acid." Chemistry of Heterocyclic Compounds 23, no. 10 (1987): 1081–83. http://dx.doi.org/10.1007/bf00476537.

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3

Archana, Archana, Abha Awasthi, and Sakshi Chaudhary. "Synthesis of Novel Indolylbenzothiazepines/Indolylbenzoxaziepines Substituted 2-Oxo/Thiobarbituric Acids as Potential Anticonvulsant Agents." Oriental Journal Of Chemistry 40, no. 1 (2024): 239–46. http://dx.doi.org/10.13005/ojc/400129.

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4-(2’-Oxo/thiobarbiturinyl acid) – 2 - (2”-halo-1”H-indolyl) - 2,3 - dihydro - -1,5-benzothiazepines (7-10) and 4-(2’-oxo/thiobarbiturinyl acid) – 2 - (2”-halo-1”H-indolyl) - 2,3 - dihydro - -1,5-benzoxazepines (11-14) undergoes Mannich reaction to afford compounds 4-(2’-oxo/thiobarbiturinyl acid) – 2 - (2”-halo-1”H-indolyl) – 3 - (substitutedphenyl aminomethylene) - 2,3 - dihydro - 1,5-benzothiazepines (15-22) and 4-(2’-oxo/thiobarbiturinyl acid) – 2 - (2”-halo-1”H-indolyl) – 3-( substitutedphenyl aminomethylene) - 2,3 - dihydro - 1,5-benzoxazepines (23-30) correspondingly. All the chemical f

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4

Fernandes, Rodney A., and Anupama Kumari. "BX3-Mediated Intermolecular Formation of Functionalized 3-Halo-1H-indenes via Cascade Halo-Nazarov-Type Cyclization." Synthesis 52, no. 15 (2020): 2245–58. http://dx.doi.org/10.1055/s-0039-1690881.

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A BX3-promoted, intermolecular regioselective synthesis of 3-halo-functionalized 1H-indenes from 4-oxo-4H-chromene-3-carbaldehydes and alkynes has been developed. BX3 displays a dual role of Lewis acid catalyst and halide source for haloallyl cation formation for the intended halo-Nazarov-type cyclization. The overall transformation represents an efficient cascade annulation that employs readily available starting materials, inexpensive reagents and a convenient and mild reaction procedure to generate halo-functionalized indenes (45 examples). The reaction was also extended to 8-formylcoumari

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5

Zyk, Nikolai V., Elena K. Beloglazkina, Maria A. Belova, Stanislav V. Zatonsky, and Nikolai S. Zefirov. "Acid-Catalyzed Isomerization of 1-Halo-2-Arylthioalk-1-Enes." Phosphorus, Sulfur, and Silicon and the Related Elements 177, no. 3 (2002): 555–65. http://dx.doi.org/10.1080/10426500210267.

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6

Khaibullin, R. N., M. G. Kurochkina, I. Yu Strobykina, A. B. Dobrynin, and V. E. Kataev. "13-halo derivatives of ent-kauranoic acid. Synthesis and structure." Russian Journal of General Chemistry 81, no. 5 (2011): 927–30. http://dx.doi.org/10.1134/s1070363211050148.

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7

Lederer, Michael. "Adsorption chromatography of metal halo complexes from sulphuric acid solutions." Analytica Chimica Acta 246, no. 2 (1991): 451–53. http://dx.doi.org/10.1016/s0003-2670(00)80986-1.

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8

Armesto, X. L., M. Canle L., M. Losada, and J. A. Santaballa. "Concerted Grob Fragmentation in N-Halo-.alpha.-amino Acid Decomposition." Journal of Organic Chemistry 59, no. 16 (1994): 4659–64. http://dx.doi.org/10.1021/jo00095a048.

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9

Uraguchi, Daisuke, Tomohito Kizu, Yuki Ohira та Takashi Ooi. "Enantioselective protonation of α-hetero carboxylic acid-derived ketene disilyl acetals under chiral ionic Brønsted acid catalysis". Chem. Commun. 50, № 88 (2014): 13489–91. http://dx.doi.org/10.1039/c4cc06081d.

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P-Spiro chiral diaminodioxaphosphonium ion discriminates the enantiofaces of α-halo and alkoxy carboxylic acid-derived ketene disilyl acetals by the recognition of the electronic difference between two substituents of the ketene disilyl acetal in the proton-transfer event.

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10

Epps, Ayunna K., Tonya M. Horne, Sha Nese Jackson, Bridgette Sands, and Ghislain R. Mandouma. "Regioselective Nitration of Halogenated Benzo[c]cinnolines and Benzenoids." International Journal for Innovation Education and Research 3, no. 8 (2015): 136–53. http://dx.doi.org/10.31686/ijier.vol3.iss8.419.

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Electrophilic nitration of halo-substituted benzo[c]cinnolines and benzenoids has been achieved regioselectively. The nitro group entry was always ortho to the halo group or/and the aromatic ring. This regioselective electrophilic ortho-nitration was accomplished in mixed acid/mild temperature conditions. Regioselectivity ortho to the halo/ring group(s) was observed with or without proximal steric hindrance. Chlorides and bromides worked equally well in directing these high-yielding ortho-selective reactions.

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11

Wickramasinghe, Lasantha A., and Paul R. Sharp. "Photoreduction of Pt(IV) Halo-Hydroxo Complexes: Possible Hypohalous Acid Elimination." Inorganic Chemistry 53, no. 3 (2014): 1430–42. http://dx.doi.org/10.1021/ic402358s.

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12

Krasnov, V. P., M. A. Koroleva, and G. L. Rusinov. "Nucleophilic substitution of halogen in 4-halo derivatives of glutamic acid." Russian Chemical Bulletin 45, no. 3 (1996): 543–44. http://dx.doi.org/10.1007/bf01435778.

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13

Richardson, Marianne L., and Malcolm F. G. Stevens. "Structural Studies on Bioactive Compounds. Part 37.1 Suzuki Coupling of Diaminopyrimidines: A New Synthesis of the Antimalarial Drug Pyrimethamine." Journal of Chemical Research 2002, no. 10 (2002): 482–84. http://dx.doi.org/10.3184/030823402103170664.

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Suzuki reactions have been used successfully to effect cross-coupling of 5-halopyrimidines with 4-chlorobenzeneboronic acid and 2,4-diamino-5-(4-chloro-3-halo)-6-ethylpyrimidines with 4-methoxybenzeneboronic acid. The antimalarial drug pyrimethamine has been prepared by coupling 2,4-diamino-6-ethyl-5-iodopyrimidine with 4-chlorobenzeneboronic acid.

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14

Onda, Masaaki, Kenzo Motosugi, and Hiroshi Nakajima. "A New Approach for Enzymatic Synthesis ofd-3-Chlorolactic Acid from Racemic 2,3-Dichloropropionic Acid by Halo Acid Dehalogenase." Agricultural and Biological Chemistry 54, no. 11 (1990): 3031–33. http://dx.doi.org/10.1080/00021369.1990.10870449.

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15

Kurihara, Tatsuo, Ji-Quan Liu, Vincenzo Nardi-Dei, Hiromoto Koshikawa, Nobuyoshi Esaki, and Kenji Soda. "Comprehensive Site-Directed Mutagenesis of L-2-Halo Acid Dehalogenase to Probe Catalytic Amino Acid Residues1." Journal of Biochemistry 117, no. 6 (1995): 1317–22. http://dx.doi.org/10.1093/oxfordjournals.jbchem.a124861.

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16

Hocek, Michal, Antonín Holý, and Hana Dvořáková. "Cytostatic 6-Arylpurine Nucleosides IV. Synthesis of 2-Substituted 6-Phenylpurine Ribonucleosides." Collection of Czechoslovak Chemical Communications 67, no. 3 (2002): 325–35. http://dx.doi.org/10.1135/cccc20020325.

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A series of 2-X-substituted-6-phenyl-9-(β-D-ribofuranosyl)purines (X = Cl, Br, I, CH3, CF3and Ph) was prepared by halo-deaminations of protected 2-amino-6-phenylpurine ribonucleoside, by regioselective Suzuki-Miyaura reactions of 2,6-dihalopurines with phenylboronic acid or by cross-coupling reactions of the corresponding 2-halo-6-phenylpurines followed by deprotection. None of the title nucleosides exhibited any considerable cytostatic activity.

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17

Dhakal, Saroj, Jahidul Hassan, Md Mijanur Rahman Rajib, et al. "Seed priming and GA3 field application enhanced growth, yield and postharvest quality of okra." Trends in Horticulture 6, no. 2 (2023): 3578. http://dx.doi.org/10.24294/th.v6i2.3578.

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Highly nutritive and antioxidants-enriched okra (Abelmoschus esculentus) gets sub-optimal field yield due to the irregular germination coupled with non-synchronized harvests. Hence, the research aimed at assessing the combined impact of seed priming and field-level gibberellic acid (GA3) foliar spray on the yield and post-harvest quality of okra. The lab studies were conducted using a complete randomized design (CRD), while the field trials were performed following a factorial randomized complete block design (RCBD) with three replications. Okra seeds were subjected to ten different priming me

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18

ONDA, Masaaki, Kenzo MOTOSUGI, and Hiroshi NAKAJIMA. "A new approach for enzymatic synthesis of D-3-chlorolactic acid from racemic 2,3-dichloropropionic acid by halo acid dehalogenase." Agricultural and Biological Chemistry 54, no. 11 (1990): 3031–33. http://dx.doi.org/10.1271/bbb1961.54.3031.

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19

Broicher, Volker, та Detlef Geffken. "Fluorierte α-Oxocarbonsäuren aus Oxalsäuredi-tert-butylester und fluorierten (Halo)alkyltrimethylsilanen / Fluorinated a-Oxocarboxylic Acids from Oxalic Di-tert-butylester and Fluoro(halo)alkyltrimethylsilanes". Zeitschrift für Naturforschung B 45, № 3 (1990): 401–3. http://dx.doi.org/10.1515/znb-1990-0317.

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An efficient two-step synthesis of some fluoro pyruvic acids monohydrates 6 is described. The reaction of fluoromethyltrimethylsilanes 3 with di-tert-butyl oxalate (4) in the presence of tetrabutylammonium fluoride as a catalyst produces intermediate siloxy products 5, which are converted by hydrogen chloride into 6. 3,3,4,4,4-Pentafluoro-2-oxo-butanoic acid monohydrate (6c) is obtained analogously by reacting pentafluoroethyltrimethylsilane (3c) with 4.

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20

Walsh, Julie L., William P. Todd, Barry K. Carpenter, and Robert Schwarcz. "4-Halo-3-hydroxyanthranilic acids: Potent competitive inhibitors of 3-hydroxy-anthranilic acid oxygenase in vitro." Biochemical Pharmacology 42, no. 5 (1991): 985–90. http://dx.doi.org/10.1016/0006-2952(91)90279-e.

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21

Hasan, A. K. M. Quamrul, Harumi Takada, Nobuyoshi Esaki, and Kenji Soda. "Catalytic action ofL-2-halo acid dehalogenase on long-chainL-2-haloalkanoic acids in organic solvents." Biotechnology and Bioengineering 38, no. 9 (1991): 1114–17. http://dx.doi.org/10.1002/bit.260380921.

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22

Rai, Alok R., Raghvendra Pratap Singh, Alok Kumar Srivastava, and Ramesh Chandra Dubey. "Structure prediction and evolution of a halo-acid dehalogenase of Burkholderia mallei." Bioinformation 8, no. 22 (2012): 1111–13. http://dx.doi.org/10.6026/97320630081111.

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23

Mandal, Arun K., and A. M. Nijasure. "Iodide Ion Catalysed Dehalogenation of 2-Halo Ketones, Acid Derivatives and Nitriles." Synlett 1990, no. 09 (1990): 554. http://dx.doi.org/10.1055/s-1990-21165.

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24

Gordeeva, N. A., M. A. Kirpich�nok, N. S. Patalakha, and I. I. Grandberg. "Synthesis, spectral-luminescence, and acid-base properties of 3-halo-7-aminocoumarins." Chemistry of Heterocyclic Compounds 26, no. 12 (1990): 1329–37. http://dx.doi.org/10.1007/bf00473959.

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25

Abell, Andrew D., Deborah A. Hoult, Kathy M. Morris, Jane M. Taylor, and John O. Trent. "Halogenation of keto acid phosphoranes: synthesis of halo enol lactones and haloallenes." Journal of Organic Chemistry 58, no. 6 (1993): 1531–37. http://dx.doi.org/10.1021/jo00058a039.

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26

Matteson, Donald S., and T. John Michnick. "Stereoselective reaction of an enolate with chiral .alpha.-halo boronic acid esters." Organometallics 9, no. 12 (1990): 3171–77. http://dx.doi.org/10.1021/om00162a031.

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27

Hasegawa, Junzo, Masahiro Ogura, Hidetoshi Kutsuki, and Kiyoshi Watanabe. "Microbial production of (R)-3-halolactic acid from (±)-3-halo-1,2-propanediol." Journal of Fermentation Technology 64, no. 3 (1986): 251–54. http://dx.doi.org/10.1016/0385-6380(86)90107-x.

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28

Krasnov, V. P., M. A. Koroleva, N. G. Evstigneeva, and I. A. Nizova. "Nucleophilic substitution of halogen in 4-halo genated derivatives of glutamic acid." Russian Chemical Bulletin 44, no. 4 (1995): 635–38. http://dx.doi.org/10.1007/bf00698493.

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29

ARMESTO, X. L., M. CANLE L., M. LOSADA та J. A. SANTABALLA. "ChemInform Abstract: Concerted Grob Fragmentation in N-Halo-α-amino Acid Decomposition." ChemInform 26, № 6 (2010): no. http://dx.doi.org/10.1002/chin.199506217.

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30

Hayakawa, Mamiko, Tadashi Aoyama, Kyohei Nakaoka, Masayuki Kosuge, and Akihiko Ouchi. "Integration of a Four-Step Reaction into One-Pot under the Coexistence of Silica-Gel-Supported Acid and Base Reagents: Synthesis of Benzo- and Naphthothiophenes Using NaHSO4/SiO2 and Na2CO3/SiO2." Synthesis 51, no. 12 (2019): 2572–78. http://dx.doi.org/10.1055/s-0037-1610866.

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A four-step synthesis of benzo- and naphthothiophenes that have biological importance and application in material science was integrated into a one-pot reaction by using silica gel-supported acid and base reagents, NaHSO4/SiO2 and Na2CO3/SiO2. The supported reagents provided acid and base environments on the surface of the supports without neutralization and worked separately in the same medium. The four-step reaction comprises (i) deacetylation of 3-halo-2,4-pentanediones to α-halo ketones, (ii) deacetylation of S-aryl thioacetates to arenethiols, (iii) coupling of α-halo ketones and areneth

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31

Sorabad, Ganesh Shivayogappa, та Mahagundappa Rachappa Maddani. "Metal-free, green and efficient oxidative α halogenation of enaminones by halo acid and DMSO". New Journal of Chemistry 43, № 17 (2019): 6563–68. http://dx.doi.org/10.1039/c8nj06412a.

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Metal free oxidative halogenation of N-aryl enaminones has been demonstrated using a DMSO–halo acid combination under mild reaction conditions. The present method is a straightforward approach and is also applied for the synthesis of chromenone derivatives in excellent yields.

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32

Cao, Shu-Juan, Jian-Hang Qu, Hong-Li Yuan, and Bao-Zhen Li. "Salsuginibacillus halophilus sp. nov., a halophilic bacterium isolated from a soda lake." International Journal of Systematic and Evolutionary Microbiology 60, no. 6 (2010): 1339–43. http://dx.doi.org/10.1099/ijs.0.010181-0.

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A Gram-stain-positive, rod-shaped, endospore-forming, halophilic, alkalitolerant bacterium, designated halo-1T, was isolated from sediment of Xiarinaoer soda lake, located in the Inner Mongolia Autonomous Region of China. Strain halo-1T grew in the presence of 9–30 % (w/v) NaCl (optimum 19 %) and at pH 5–10 (optimum pH 9). The cell-wall peptidoglycan contained meso-diaminopimelic acid and the major respiratory isoprenoid quinone was MK-7. The predominant cellular fatty acids of the isolate were anteiso-C15 : 0 (58.35 %), anteiso-C17 : 0 (12.89 %) and C16 : 0 (6.52 %). The polar lipids containe

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33

Jiang, Feng, Shu-Juan Cao, Zhao-Hu Li, et al. "Salisediminibacterium halotolerans gen. nov., sp. nov., a halophilic bacterium from soda lake sediment." International Journal of Systematic and Evolutionary Microbiology 62, Pt_9 (2012): 2127–32. http://dx.doi.org/10.1099/ijs.0.034488-0.

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An orange-pigmented, Gram-reaction-positive, non-spore-forming, halophilic, alkali-tolerant rod, designated strain halo-2T, was isolated from sediment of Xiarinaoer soda lake, in China’s Inner Mongolia Autonomous Region. Strain halo-2T grew in a complex medium with 3–30 % (w/v) NaCl and at pH 5–10. The cell-wall peptidoglycan contained meso-diaminopimelic acid and the major respiratory isoprenoid quinone was MK-7. The predominant cellular fatty acids were anteiso-C15 : 0 (43.6 %), anteiso-C17 : 0 (14.8 %) and iso-C15 : 0 (6.8 %) and the polar lipids consisted of diphosphatidylglycerol, phospha

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34

WEBER, KEVIN H., JULIE A. HARRIS, LAURA J. LARSON, FU-MING TAO, SHUJIN LI, and RENAO GU. "MECHANISTIC STUDY OF THE REACTIONS OF SULFUR TRIOXIDE WITH HYDROGEN HALIDES TO FORM SUPERACID AND SURVEY OF HALO-SULFONIC ACID STRENGTH." Journal of Theoretical and Computational Chemistry 04, spec01 (2005): 623–38. http://dx.doi.org/10.1142/s0219633605001696.

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The reaction mechanisms for the formations of halo-sulfonic acids from sulfur trioxide and hydrogen halides are investigated using density functional theory. Two channels of reaction are considered: the binary SO 3 + HX reaction pathway and the ternary SO 3 + 2 HX pathway. Equilibrium geometries, harmonic frequencies, and relative energies of the reactant, transition state, and product clusters are calculated at the B3LYP/6-311++G** level. Hydrogen fluoride was found to have a particularly strong interaction with SO 3, forming an electron donor acceptor complex. Similarities to the hydrolysis

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35

Mahesh, Kumar Gupta, N. Pandeya Suerendra, M. Zaiad Golal, and S. Gangwar V. "Synthesis and anticonvulsant activity of halo-substituted aryl urea and thioureas." Journal of India Chemical Society Vol. 87, Nov 2010 (2010): 1411–24. https://doi.org/10.5281/zenodo.5806024.

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Prabhat Engineering College, Kanpur Dehat-209 304, Uuar Pradesh, India <em>E-mail:</em> mksunny63@yahoo.in Saroj Institute of Technology & Management, Lucknow-226 004, Uttar Pradesh, India Department of Chemistry, AI-Margeb University, AI-Khums, Libya V.S.S.D. College, Kanpur-208 002, Uttar Pradesh, India <em>Manuscript received 6 November 2008, revised 15 December 2009, accepted 3 June 2010</em> Halo-substituted arylureas have been .prepared by condensation of halo-substituted primary arylamiue with sodium cyanate and halo-substituted arylthioureu have been prepared by condensation o

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36

Kotha, Sambasivarao, and Gaddamedi Sreevani. "Synthesis of Spiro Barbiturates and Meldrum’s Acid Derivatives via a [2+2+2] Cyclotrimerization." Synthesis 50, no. 24 (2018): 4883–88. http://dx.doi.org/10.1055/s-0037-1610238.

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Intermolecular [2+2+2] cycloaddition of propargyl halides with 1,6-diynes was accomplished with a catalytic amount of Mo(CO)6 to generate benzyl halo barbiturates and Meldrum’s acid derivatives containing a spiro linkage. Furthermore, we have extended this methodology to synthesize linearly fused Meldrum’s acid derivatives via Diels–Alder reaction using rongalite chemistry.

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37

Hadzic, Pavle, Nada Vukojevic, Mirjana Popsavin, and Janos Canadi. "Nucleophilic opening of the 3,5-anhydro ring in 1,2-O-cyclohexylidene- -D-xylofuranose." Journal of the Serbian Chemical Society 66, no. 1 (2001): 1–8. http://dx.doi.org/10.2298/jsc0101001h.

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The reactivity of the oxetane ring in 3,5-anhydro-1,2-O-cyclohexylidene- -D-xylofuranose (1) was exemplified by its regiospecific nucleophilic opening. The action of concentrated hydrobromic or hydroiodic acid on 1 resulted in the exclusive formation of the 5-deoxy-5-halo derivatives, while the action of acetyl chloride or acetyl bromide yielded the corresponding 3-O-acetyl-5-deoxy-5-halo derivatives in 70 - 90 % yield. Under strongly acidic reaction conditions, the protection of the cyclohexylidene acetal function remained intact.

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38

El-Zohry, Maher F. "Nonconventional Friedel-Crafts Chemistry. VII. On Homoannular and Heteroannular Reactions of Ferrocene with Bifunctional Moieties under Friedel-Crafts Conditions." Collection of Czechoslovak Chemical Communications 58, no. 5 (1993): 1203–7. http://dx.doi.org/10.1135/cccc19931203.

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The utilization of ferrocene in the organic synthesis and its uses in Friedel-Crafts chemistry, together with our interest in this area, prompted us to investigate the reaction of ferrocene with halo acid chlorides and α,β-unsaturated acid chlorides under different Friedel-Crafts conditions with the aim to employ these reactions in the syntheses of polycyclic ferrocene derivatives.

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39

Cooper, Bret, Kimberly B. Campbell, Hunter S. Beard, Wesley M. Garrett, and Marcio E. Ferreira. "The Proteomics of Resistance to Halo Blight in Common Bean." Molecular Plant-Microbe Interactions® 33, no. 9 (2020): 1161–75. http://dx.doi.org/10.1094/mpmi-05-20-0112-r.

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Halo blight disease of beans is caused by a gram-negative bacterium, Pseudomonas syringae pv. phaseolicola. The disease is prevalent in South America and Africa and causes crop loss for indigent people who rely on beans as a primary source of daily nutrition. In susceptible beans, P. syringae pv. phaseolicola causes water-soaking at the site of infection and produces phaseolotoxin, an inhibitor of bean arginine biosynthesis. In resistant beans, P. syringae pv. phaseolicola triggers a hypersensitive response that limits the spread of infection. Here, we used high-throughput mass spectrometry to

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40

Combs, Andrew P., та Robert W. Armstrong. "Characterization of α-halo-imine intermediates derived from halogenation of dehydroamino acid derivatives". Tetrahedron Letters 33, № 43 (1992): 6419–22. http://dx.doi.org/10.1016/s0040-4039(00)79004-6.

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41

Jain, Nilesh, та Ashutosh V. Bedekar. "Roof shape chiral alcohol: auxiliary for asymmetric synthesis of α-halo acid derivatives". Tetrahedron Letters 57, № 6 (2016): 692–95. http://dx.doi.org/10.1016/j.tetlet.2016.01.003.

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42

Homsi, Fadi, Kazushi Hosoi, Kyoko Nozaki, and Tamejiro Hiyama. "Solid phase cross-coupling reaction of aryl(halo)silanes with 4-iodobenzoic acid." Journal of Organometallic Chemistry 624, no. 1-2 (2001): 208–16. http://dx.doi.org/10.1016/s0022-328x(01)00664-7.

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43

Petrova, P. R., A. V. Koval’skaya, A. N. Lobov, and I. P. Tsypysheva. "Conjugates of 9- and 11-Halo-Substituted Cytisines with 1′-N-Methylurocanic Acid." Chemistry of Natural Compounds 55, no. 6 (2019): 1106–9. http://dx.doi.org/10.1007/s10600-019-02905-2.

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44

Choi, Daeock, та Harold Kohn. "Trimethylsilyl halides: Effective reagents for the synthesis of β-halo amino acid derivatives". Tetrahedron Letters 36, № 39 (1995): 7011–14. http://dx.doi.org/10.1016/0040-4039(95)01451-m.

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45

Vidyadharan, Kavya, Dan Meyerstein, Vered Marks, Ariela Burg, Michael Meistelman, and Yael Albo. "Unveiling New Product Formations beyond Conventional Pathways in De-Halogenation of Halo-Acetic Acids Using Ni-Encapsulated Sol-Gel Catalysts." Catalysts 14, no. 9 (2024): 596. http://dx.doi.org/10.3390/catal14090596.

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The urgency of water remediation and the conversion of toxic pollutants into non-toxic compounds is increasingly crucial in our industrialized world. Heterogeneous catalysts based on metal nanoparticles, which are cost-effective, non-toxic, and readily available, have garnered significant attention in the market due to their unique catalytic properties. This study presents sol–gel-based hybrid silica matrices that encapsulate nickel, designed for the efficient reductive de-halogenation of tri-bromoacetic acid (TBAA), di-bromoacetic acid (DBAA), mono-bromoacetic acid (MBAA), tri-chloroacetic ac

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Sparkes, M. J., H. B. F. Dixon, K. F. Geoghegan, and E. Visedo-Gonzalez. "Application of the synthetic method to other amines." Biochemical Journal 260, no. 1 (1989): 296–97. http://dx.doi.org/10.1042/bj2600296.

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Taurine and 2-aminoethylphosphonic acid were synthesized by the method of the main paper [Geoghegan & Dixon (1989) Biochem. J. 260, 295-296], i.e. by treating the corresponding halo compound with 2-aminoethanol and then with periodate.

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Larsen, K. R., J. G. Moore, and M. T. Dayton. "Circadian rhythms of acid and bicarbonate efflux in fasting rat stomach." American Journal of Physiology-Gastrointestinal and Liver Physiology 260, no. 4 (1991): G610—G614. http://dx.doi.org/10.1152/ajpgi.1991.260.4.g610.

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One model of gastric ulcerogenesis implicates a disruption of complementary circadian rhythms between protective and destructive factors. The purpose of this study was to compare circadian rhythms in gastric production of H+ and HCO3- in fasted rats. Sprague-Dawley rats were acclimatized in sound-attenuating, light-proof chambers for 3 wk on a 12:12-h light-dark schedule. Eighteen-hour fasted rats were studied at each of eight sampling times. After anesthesia, the stomachs were cannulated and filled with test solution. Thirty-minute gastric samples were titrated for H+ or assayed for HCO3-. Co

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Bandita, Pati, and Padhi Sanhita. "Isolation and characterization of phosphate solubilizing bacteria in saline soil from Costal Region of Odisha." GSC Biological and Pharmaceutical Sciences 16, no. 3 (2021): 109–19. https://doi.org/10.5281/zenodo.5542913.

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The present study was conducted to isolate phosphate solubilizing bacteria (PSB) from rhizospheric saline soils of coastal Odisha, India and evaluated their phosphate solubilizing ability. Total four PSB were isolated based on the halo zone formation (solubilizing index 2.63-3.14) on PVK agar medium and were characterized based on biochemical and molecular characteristics as <em>Bacillus subtilis</em> (B1), <em>B. megaterium</em> (B2), <em>Sphingomonas paucimobilis</em> (P2) and <em>Kocuria kristinae</em> (P6). The inorganic phosphate released by PSB ran

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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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S. Bari, Shamsher, Paloth Venugopalan, Renu Arora, Garima Modi, and Sachin Madan. "An Unusual Lewis Acid Promoted Isomerization of trans-3-Halo-3-phenylthio-b-lactams." HETEROCYCLES 68, no. 4 (2006): 749. http://dx.doi.org/10.3987/com-04-10299.

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