Supramolecular catalytic systems based on alkylated diquaternary 1,4-diazabicyclo[2.2.2]octane derivatives

被引：7
|
作者：
Zhil'tsova, E. P. [1 ]
Gimranova, R. F. [2 ]
Lukashenko, S. S. [1 ]
Pashirova, T. N. [1 ]
Kharlampidi, Kh E. [2 ]
Zakharova, L. Ya [1 ,2 ]
机构：
[1] Russian Acad Sci, AE Arbuzov Organ & Phys Chem Inst, Kazan Sci Ctr, Kazan 420088, Tatarstan, Russia
[2] Kazan Natl Res Technol Univ, Kazan 420015, Tatarstan, Russia
来源：
KINETICS AND CATALYSIS | 2013年 / 54卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
RIBONUCLEASE-ACTIVITY; MICELLIZATION; HYDROLYSIS; MIXTURES; BROMIDES; ACIDS;
D O I：
10.1134/S0023158413050200
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The micellization and catalytic properties of the diquaternary 1,4-diazabicyclo[2.2.2]octane derivatives, viz., 1-alkyl-4-ethyl-1,4-diazoniabicyclo[2.2.2]octane dibromides (DAD) in water were studied by conductometry, viscosimetry, and spectrophotometry. The critical micelle concentrations and the semiaxial ratio of the micellar aggregates were determined. The character and strength of the effect of the DAD micelles on the alkaline hydrolysis of 4-nitrophenyl alkylchloromethylphosphonates depend on the surfactant and substrate structures, DAD concentration in solution, and temperature. An increase in the hydrophobicity of DAD and phosphonate increases the efficiency of catalysis.
引用
收藏
页码：552 / 558
页数：7
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