Quaternary salts of N,N-dimethylaminoethyl esters of pivalic and 2-methyl-3-methoxypropionic acid and their hydrolysis

1986 ◽  
Vol 51 (1) ◽  
pp. 206-214 ◽  
Author(s):  
Stanislav Ševčík ◽  
Martin Přádný
Keyword(s):  
Methyl Iodide ◽  
Alkaline Hydrolysis ◽  
Structural Unit ◽  
Model Compounds ◽  
Dimethylaminoethyl Methacrylate ◽  
Quaternary Salts ◽  
Terminal Unit ◽  
Kinetics Of ◽  
Hydrolysis Of

The synthesis and kinetics of quaternization of model compounds of poly(N,N-dimethylaminoethyl methacrylate) in water-alcoholic solutions brought about by methyl iodide and the alkaline hydrolysis of products in water have been investigated. N,N-Dimethylaminoethyl pivalate was selected as a model of the structural unit of the reported polymer; N,N-dimethylaminoethyl-2-methyl-3-methoxypropionate was the model of the terminal unit of the anionically prepared polymer.

Alkaline hydrolysis of pivalic esters of ethylene glycol in water-acetone solutions

1980 ◽  
Vol 45 (3) ◽  
pp. 720-726 ◽  
Author(s):  
Stanislav Ševčík ◽  
Miroslav Kubín ◽  
Jiří Štamberg
Keyword(s):  
Ethylene Glycol ◽  
Alkaline Hydrolysis ◽  
Structural Unit ◽  
Hydroxyethyl Methacrylate ◽  
Structural Units ◽  
Kinetics Of Hydrolysis ◽  
Ethylene Dimethacrylate ◽  
Crosslinking Site ◽  
Kinetics Of ◽  
Hydrolysis Of

The paper reports alkaline hydrolysis of ethylene dipivalate and 2-hydroxyethyl pivalates as compounds modelling the structural unit and crosslinking site of hydrophilic gels, i.e. copolymers of 2-hydroxyethyl methacrylate and ethylene dimethacrylate. The kinetics of hydrolysis was investigated in water-acetone solutions containing respectively 50, 75, 80, 85 and 90% by vol. (related to 20°C) of acetone at 20, 30, 40, and 50°C. It was demonstrated that, owing to steric hindrance, the preferential hydrolysis of monoester was more pronounced in the case of pivalic esters of ethylene glycol compared with acetic esters of ethylene glycol. The results are discussed in connection with the selectivity of the alkaline hydrolysis of ester bonds in "pendant" parts of structural units in hydrophylic methacrylate gels.

Influence of medium on alkaline hydrolysis of succinic acid monomethyl and monopropyl esters

1980 ◽  
Vol 45 (11) ◽  
pp. 2873-2882
Author(s):  
Vladislav Holba ◽  
Ján Benko
Keyword(s):  
Succinic Acid ◽  
Kinetic Parameters ◽  
Alkaline Hydrolysis ◽  
Specific Interactions ◽  
Nonaqueous Media ◽  
The Media ◽  
Kinetics Of ◽  
Hydrolysis Of

The kinetics of alkaline hydrolysis of succinic acid monomethyl and monopropyl esters were studied in mixed aqueous-nonaqueous media at various temperatures and ionic strengths. The results of measurements are discussed in terms of electrostatic and specific interactions between the reactants and other components of the reaction mixture. The kinetic parameters in the media under study are related to the influence of the cosolvent on the solvation sphere of the reactants.

The Kinetics of the Acidic and Alkaline Hydrolysis of Ethyl Thionbenzoate

1963 ◽  
Vol 28 (10) ◽  
pp. 2825-2828 ◽  
Author(s):  
Stanley G. Smith ◽  
Marion O'Leary
Keyword(s):  
Alkaline Hydrolysis ◽  
Kinetics Of ◽  
Hydrolysis Of

scholarly journals Isothermal and non-isothermal kinetics of hydrolysis of 1-[2-(2- pentyloxyphenylcarbamoyloxy)-(2-methoxymethyl)-ethyl]- perhydroazepinium chloride (BK 129)

2013 ◽  
Vol 60 (2) ◽  
pp. 43-48
Author(s):  
Stankovičová M. ◽  
Bezáková Ž. ◽  
Beňo P. ◽  
Húšťavová P.
Keyword(s):  
Biological Activity ◽  
Alkaline Hydrolysis ◽  
Functional Group ◽  
Isothermal Kinetics ◽  
Basic Part ◽  
Buffer Solutions ◽  
Kinetics Of Hydrolysis ◽  
Short Time ◽  
Kinetics Of ◽  
Hydrolysis Of

Abstract The substance BK 129 - 1-[2-(2-pentyloxyphenylcarbamoyloxy)-(2-methoxymethyl)-ethyl]-perhydroazepinium chloride was prepared in terms of influence of the connecting chain between the carbamate functional group and the basic part of molecule on biological activity. Such a structural feature is important with regard to its stability. In this work we determined the rate constants of alkaline hydrolysis of this compound at increased temperature under isothermal and non-isothermal conditions. The hydrolysis was also performed in buffer solutions with the purpose of evaluating its stability. Non-isothermal tests of stability enable to reduce the number of analyses. The necessary data for stability of compound are in this way achieved in a short time.

Kinetics of alkaline hydrolysis of ethylp-nitrophenyl ethylphosphonate in the reverse micellar system: sodium dodecyl sulfate-hexanol-water

2000 ◽  
Vol 49 (2) ◽  
pp. 265-269
Author(s):  
L. Ya. Zakharova ◽  
F. G. Valeeva ◽  
L. A. Kudryavtseva ◽  
V. E. Bel'skii ◽  
E. P. Zhil'tsova ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Alkaline Hydrolysis ◽  
Sodium Dodecyl ◽  
Micellar System ◽  
Dodecyl Sulfate ◽  
Reverse Micellar System ◽  
Kinetics Of ◽  
Hydrolysis Of ◽  
System Sodium ◽  
Reverse Micellar

Comprehensive Investigations of Kinetics of Alkaline Hydrolysis of TNT (2,4,6-Trinitrotoluene), DNT (2,4-Dinitrotoluene), and DNAN (2,4-Dinitroanisole)

2014 ◽  
Vol 48 (17) ◽  
pp. 10465-10474 ◽  
Author(s):  
Liudmyla Sviatenko ◽  
Chad Kinney ◽  
Leonid Gorb ◽  
Frances C. Hill ◽  
Anthony J. Bednar ◽  
...  
Keyword(s):  
Alkaline Hydrolysis ◽  
Kinetics Of ◽  
Hydrolysis Of
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