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Aminolysis of 4-nitrophenyl esters of phosphorus acids in reversed micelles of 2-hydroxyethyldimethylpentadecylammonium bromide

  • Physical Chemistry
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Russian Chemical Bulletin Aims and scope

Abstract

The reactions ofn-cetyl- andn-hexylamines with 4-nitrophenyl esters of tetracoordinated phosphorus acids in chloroform in the presence of 2-hydroxyethyldimethylpentadecylammonium bromide and the influence of the latter on the acid—base equilibrium of the bromphenol blue dye (BPB) were studied by the spectrophotometric method. In the presence of reversed micelles of the cationic surfactant, the observed rate constant of aminolysis increases by more than two orders of magnitude. The catalytic efficiency of the micelles increases as the concentration of the long-chain amine decreases and on going from the latter to a short-chain amine. The acid—base equilibrium of BPB in micellar solutions is shifted due to the formation of a complex between the surfactant and the BPB dianion.

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Authors and Affiliations

  1. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan' Scientific Center of the Russian Academy of Sciences, 8 ul. Akad. Arbuzova, 420083, Kazan', Russian Federation

    E. P. Tishkova, L. A. Kudryavtseva & V. E. Bel'skii

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  1. E. P. Tishkova
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  2. L. A. Kudryavtseva
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  3. V. E. Bel'skii
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2125–2128, December, 1997.

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Tishkova, E.P., Kudryavtseva, L.A. & Bel'skii, V.E. Aminolysis of 4-nitrophenyl esters of phosphorus acids in reversed micelles of 2-hydroxyethyldimethylpentadecylammonium bromide. Russ Chem Bull 46, 2011–2014 (1997). https://doi.org/10.1007/BF02495243

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  • DOI: https://doi.org/10.1007/BF02495243

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