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首页> 外文期刊>Indian Journal of Chemistry, Section B. Organic Including Medicinal >Acidic hydrolysis of hydroxamic acids in mixed cationic-cationic,cationic-nonionic and anionic-nonionic micelles
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Acidic hydrolysis of hydroxamic acids in mixed cationic-cationic,cationic-nonionic and anionic-nonionic micelles

机译：混合阳离子-阳离子，阳离子-非离子和阴离子-非离子胶束中异羟肟酸的酸性水解

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摘要

Acidic hydrolyses of some carbon and nitrogen substituted hydroxamic acids (R-C(O)-N(OH)R',R=CH_3,R'=H;R=C_6H_5,R'=H;R=C_6H_5,R'=C_6H_5,RC_6H_5,R'=4-CH_3-C_6H_4)have been studied at 55deg C in mixed micellar solution of surfactants (cationic-cationic,cationic-nonionic and anionic-nonionic).The results indicate that addition of nonionic surfactant to an acid solution of anionic surfactant (SDS) strongly decreases the observed rate constant.In other mixed micellar systems inhibition has been observed.Binding constants and rate constants for the reaction in the micellar pseudophase,obtained from the kinetic analysis,have been reported.The inhibition effects depend on the hydrophobic chain length of the surfactants and the hydrophobicity of the substrate.
机译：某些碳和氮取代的异羟肟酸的酸性水解（RC（O）-N（OH）R'，R = CH_3，R'= H; R = C_6H_5，R'= H; R = C_6H_5，R'= C_6H_5， RC_6H_5，R'= 4-CH_3-C_6H_4）于55°C在表面活性剂（阳离子-阳离子，阳离子-非离子和阴离子-非离子）混合胶束溶液中进行了研究，结果表明将非离子表面活性剂添加到阴离子表面活性剂（SDS）大大降低了观察到的速率常数。在其他混合胶束系统中，也观察到了抑制作用。据报道，通过动力学分析获得的胶束假相中反应的结合常数和速率常数。表面活性剂的疏水链长度和底物的疏水性。

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