Reactivity of Inorganic α-Nucleophiles in Acyl Transfer in Aqueous and Micellar Media: IV. Peroxyhydrolysis of Acyl Derivatives in Organized Microheterogeneous Systems1.

Autor: Turovskaya, M. K., Belousova, I. A., Razumova, N. G., Gaidash, T. S., Prokop'eva, T. M., Kotenko, A. A., Mikhailov, V. A.
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Zdroj: Russian Journal of Organic Chemistry; Feb2024, Vol. 60 Issue 2, p252-258, 7p
Abstrakt: The micellar effects in the perhydrolysis and base-catalyzed hydrolysis of 4-nitrophenyl esters of phosphoric, phosphonic, and toluenesulfonic acids in organized microheterogeneous systems based on dicationic [Gemini surfactant AlkIm+–(CH2)3–Im+Alk∙2Br–, where Alk = C12H25 or C14H29 (GS)] and monocationic (AlkIm+CH3∙Br–, where Alk=C12H25 or C14H29) surfactants have been analyzed. The reagent concentrations have been found to be the main factor responsible for micellar catalysis. The hydroperoxide α-effect defined as the ratio of the second-order rate constants of perhydrolysis and base-catalyzed hydrolysis is preserved and, depending on the nature of the surfactant and the substrate, may reach ~ 100. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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