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Relevant bibliographies by topics / Tetrabutylammonium tribromide

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Academic literature on the topic 'Tetrabutylammonium tribromide'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Tetrabutylammonium tribromide"

1

Bora, Upasana, Mihir K. Chaudhuri, Deepa Dey, and Siddhartha S. Dhar. "Peroxometal-mediated environmentally favorable route to brominating agents and protocols for bromination of organics." Pure and Applied Chemistry 73, no. 1 (2001): 93–102. http://dx.doi.org/10.1351/pac200173010093.

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Higher-valent transition metals react with H2O2 to form peroxometallates, thereby activating the coordinated peroxide. Based on the reaction profiles of peroxometal species, environmentally acceptable newer syntheses of tetrabutylammonium tribromide (TBATB), Bu4NBr3, cetyltrimethylammonium tribromide (CTMATB), cetyl(Me)3NBr3, and tetraethyl-ammonium tribromide (TEATB), Et4NBr3, have been developed from the reactions of the corresponding quaternary ammonium bromides with H2O2 and a catalytic amount of vanadium(V) or molybdenum(VI). Other transition metals capable of activating peroxide give sim

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2

Berthelot, Jacques, Catherine Guette, Paul-Louis Desbène, Jean-Jacques Basselier, Patrick Chaquin, and Daniel Masure. "Bromation régiosélective en série aromatique. I: Monobromation en position para de phénols et d'aminés aromatiques par le tribromure de tétrabutylammonium." Canadian Journal of Chemistry 67, no. 12 (1989): 2061–66. http://dx.doi.org/10.1139/v89-320.

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The reaction of tetrabutylammonium tribromide (TBABr3) with phenols and aromatic amines in aprotic and non-basic solvents at 20 °C gives exclusively the corresponding para-brominated compounds in high yields. A mechanism involving electrophilic substitution by the tribromide anion Br3− itself is suggested to account for the results, especially the regioselective para bromination. Keywords: bromination, tetrabutylammonium tribromide, phenols, aromatic amines.

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3

Berthelot, Jacques, Yamina Benammar, and Bernard Desmazières. "Action of tetrabutylammonium tribromide with para-substituted chalcones in protic and aprotic media." Canadian Journal of Chemistry 73, no. 9 (1995): 1526–30. http://dx.doi.org/10.1139/v95-189.

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Bromination of the double bond of para-substituted chalcones under mild conditions in aprotic solvents is accomplished with high yields using tetrabutylammonium tribromide (TBABr3). In methanol, the main reaction is (α-β) bromomethoxylation. Stereoselectivity, regioselectivity, and chemioselectivity of this bromomethoxylation reaction are described. Keywords: bromination, bromomethoxylation, tetrabutylammonium tribromide, (α-β) dibromodihydrochalcones, α-bromo, β-methoxydihydrochalcones.

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4

Arora, Pragi, Jagdeep Dua, and Jitender Singh. "Synthesis of some new 1,3,5-trisubstituted pyrazoles as antioxidant and antiinflammatory agents." Journal of Drug Delivery and Therapeutics 9, no. 2-s (2019): 343–47. http://dx.doi.org/10.22270/jddt.v9i2-s.2722.

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A series of some new 1,3,5-trisubstituted pyrazoles was synthesized by the reaction of α-β dibromochalcones with phenylhydrazine hydrochloride. α-β-Dibromochalcones were prepared by the regioselective bromination of respective chalcones with tetrabutylammonium tribromide. The synthesized trisubstituted pyrazoles were evaluated for their anti-inflammatory and antioxidant properties. Keywords: α-β-Dibromochalcones, 1,3,5-Trisubstituted pyrazoles, Tetrabutylammonium tribromide, Anti-inflammatory and antioxidant activities

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5

Desbene-Monvernay, Annie, Ouzama Karazoun, Jacques Berthelot, and Paul-Louis Desbene. "Modelisation de la bromation au moyen de TBABr3 de matrices organiques complexes: suivi de la bromation de carbazoles à l'aide de la voltampérométrie et de la chromatographie liquide hautes performances." Canadian Journal of Chemistry 70, no. 3 (1992): 870–76. http://dx.doi.org/10.1139/v92-115.

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To determine the degree of substitution of complex matrices, the bromination of various carbazoles by tetrabutylammonium tribromide has been used as a model of a substitution reaction. This has allowed us to test the validity of the voltamperometric titration of tribromide ions and species formed (Br− and H+ ions). The results obtained for various substrate/reagent ratios are in excellent agreement with those of high performance liquid chromatography. The electrochemical titration can be considered as reliable, fast, and very easy to use. It permits us to follow the bromination kinetics and to

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6

Gogoi, Prasanta, Sukanya Hazarika, and Pranjit Barman. "Tetrabutylammonium tribromide impregnated MCM-48 as a heterogeneous catalyst for selective oxidation of sulfides." RSC Advances 5, no. 48 (2015): 38044–47. http://dx.doi.org/10.1039/c5ra04573h.

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We report here tetrabutylammonium tribromide supported on MCM-48 as a highly efficient heterogeneous catalyst for the selective oxidation of sulfides, in ethanolic medium using hydrogen peroxide as an oxidant.

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7

Srikrishna, Devulapally, and Pramod Kumar Dubey. "PEG-600 mediated one-pot reaction of 3-acetyl-2H-chromen-2-one with heterylthiols and phenylthioureas using tetrabutylammonium tribromide as an efficient green reagent." New Journal of Chemistry 41, no. 12 (2017): 5168–75. http://dx.doi.org/10.1039/c7nj00504k.

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A simple method for the one-pot reaction of 3-acetyl-2H-chromen-2-one with different heterylthiols and phenylthioureas under green conditions using tetrabutylammonium tribromide (TBATB) as an efficient reagent has been described.

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8

Li, Yingqian, Yali Liu, Di Hao, Liang Xu, and Ping Liu. "Regioselective bromination of pyrrolo[1,2-a]quinoxalines." RSC Advances 14, no. 49 (2024): 36488–96. http://dx.doi.org/10.1039/d4ra07358d.

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A novel and efficient method for the regioselective bromination of pyrrolo[1,2-a]quinoxaline using tetrabutylammonium tribromide was developed. A series of highly selective C3-brominated or C1, C3-dibrominated products were obtained in good yields.

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9

Kavitha, Kotthireddy, Devulapally Srikrishna, Pramod Kumar Dubey, and Pasula Aparna. "A Green and Efficient Synthesis of Substituted 2-(4-(2-Oxo-2H-chromen-3- yl)thiazol-2-yl)-3-phenylacrylonitriles Under Environmentally Benign Conditions." Letters in Organic Chemistry 16, no. 8 (2019): 637–42. http://dx.doi.org/10.2174/1570178616666181224112851.

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An efficient and convenient method for the condensation of various aldehydes with 2-(4-(2- oxo-2H-chromen-3-yl)thiazol-2-yl)acetonitrile has been demonstrated via triphenylphosphinecatalyzed Knoevenagel condensation in good to excellent yields. The effect of solvent on this reaction was studied. In addition, a tandem method for the synthesis of 2-(4-(2-oxo-2H-chromen-3-yl)thiazol-2- yl)acetonitrile has been outlined using tetrabutylammonium tribromide as an efficient, green and ecofriendly reagent. Subsequently, the latter was reacted with various aromatic aldehydes in the presence of PEG-600

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10

Jaya, Gosain, and K. Sharma Pradeep. "Kinetics and mechanism of the oxidation of secondary alcohols by tetrabutylammonium tribromide." Journal of Indian Chemical Society Vol. 79, Oct 2002 (2002): 815–18. https://doi.org/10.5281/zenodo.5847740.

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Department of Chemistry, J. N. V. University, Jodhpur-342 005, India <em>Manuscript received 1 January 2002, accepted 19 June 2002</em> Oxidation of several secondary alcohols by tetrabutylammonium tribromide (TBATB) in aqueous acetic acid leads to the formation of corresponding ketones. The reaction is first order with respect to TBATB and the alcohols. The reaction failed to induce polymerization of acrylonitrile. There is no effect of tetrabutylammonium chloride on the reaction rate. The proposed reactive oxidizing species is tribromide ion. The oxidation of benzhydrol-α-ß

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Dissertations / Theses on the topic "Tetrabutylammonium tribromide"

1

GUETTE, CATHERINE. "Le tribromure de tetrabutylammonium : un reactif efficace regioselectif de bromation : quelques applications en synthese et en analyse." Paris 6, 1987. http://www.theses.fr/1987PA066737.

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Book chapters on the topic "Tetrabutylammonium tribromide"

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Leung, M. k., and T. Y. Luh. "Catalyzed by Tetrabutylammonium Tribromide." In Acetals: O/N, S/S, S/N, and N/N and Higher Heteroatom Analogues. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-030-00222.

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