Ultrasonic absorption in aqueous solutions of nucleotides and nucleosides. II. Kinetics of proton exchange in adenosine 5'-monophosphate

1974 ◽  
Vol 78 (1) ◽  
pp. 80-86 ◽  
Author(s):  
Jacques Lang ◽  
Jean Sturm ◽  
Raoul Zana
Keyword(s):  
Aqueous Solutions ◽  
Proton Exchange ◽  
Ultrasonic Absorption ◽  
Nucleotides And Nucleosides ◽  
Kinetics Of

Kinetics of Base-Stacking Interactions and Proton Exchange of 6-Methylpurine Aqueous Solutions

2004 ◽  
Vol 108 (10) ◽  
pp. 1867-1872 ◽  
Author(s):  
Rüdiger Polacek ◽  
Vitaly A. Buckin ◽  
Frieder Eggers ◽  
Udo Kaatze
Keyword(s):  
Aqueous Solutions ◽  
Proton Exchange ◽  
Stacking Interactions ◽  
Base Stacking ◽  
Kinetics Of

Effects of salts on the kinetics of oxidation of alkenes by thallic salts in aqueous solutions

1981 ◽  
Vol 46 (3) ◽  
pp. 693-700 ◽  
Author(s):  
Milan Strašák ◽  
Jaroslav Majer
Keyword(s):  
Aqueous Solutions ◽  
Phase Transfer ◽  
Heterogeneous Reaction ◽  
Qualitative Model ◽  
Kinetic Effect ◽  
Tetraalkylammonium Salts ◽  
Reaction Conditions ◽  
Kinetics Of Oxidation ◽  
Kinetics Of ◽  
Heterogeneous Reaction Conditions

The kinetics of oxidation of alkenes by thallic sulphate in aqueous solutions, involving the two reaction steps-the hydroxythallation and the dethallation - was studied, and the effect of salts on the kinetics was examined; this made it possible to specify more precisely the reaction mechanism and to suggest a qualitative model of the reaction coordinate. It was found that in homogeneous as well as in heterogeneous reaction conditions, the reaction can be accelerated appreciably by adding tetraalkylammonium salts. These salts not only operate as catalysts of the phase transfer, but also exert a significant kinetic effect, which can be explained with a simplification in terms of a stabilization of the transition state of the reaction.

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