Kinetics and Catalysis

, Volume 41, Issue 3, pp 349–354 | Cite as

Molecular organization of reactants in the kinetics and catalysis of liquid phase reactions: IX. The catalytic assistance of an alcohol as a component of the medium in the aminolysis of esters

  • D. N. Tarasov
  • R. P. Tiger
  • S. G. Entelis
  • M. E. Dudnik
  • J. -J. Tondeur


The kinetics of the reaction ofp-nitrophenyl acetate with n-butylamine is studied in various solvents containing n-butanol as a component of the medium. The alcohol is shown to assist the aminolysis by the participation in the proton transfer from the amine molecule to ester. The stoichiometric composition of the polymolecular complexes of amine with the alcohol participating in the reaction is found from the kinetic data at low concentrations of n-butanol and the data on its association in solutions. At high concentrations of the alcohol, the kinetic data are described within the framework of a model that assumes the participation in the reaction of hydroxy groups of the alcohol in the composition of alcohol clusters. The rate of the process is determined by the concentration and sizes of the clusters. The complex kinetics of the catalytic assistance of the alcohol as a component of the medium are quantitatively interpreted according to the concepts on the role of the structural organization of the liquid in the kinetics of molecular reactions in solutions.


Alcohol Concentration Apparent Rate Constant Alcohol Molecule Amine Molecule Catalytic Rate Constant 
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Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • D. N. Tarasov
    • 1
  • R. P. Tiger
    • 1
  • S. G. Entelis
    • 1
  • M. E. Dudnik
    • 1
  • J. -J. Tondeur
    • 2
  1. 1.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Mons-Hainaut UniversityMonsBelgium

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