118972-30-8Relevant articles and documents
The Rate and Equilibrium Constants for N-, O-Acyl Transfer
Rybachenko,Chotii,Kovalenko,Shreder
, p. 1695 - 1698 (2007/10/03)
Reactions with dimethylcarbamoyl group transfer from N-acylpyridinium salts to pyridine N-oxides and from N-acyloxypyridinium salts to pyridines in acetonirile solutions were studied. Their rate and equilibrium constants and activation parameters were determined. The reactions were shown to be one-step and to follow the SN2 mechanism. Equations relating the rate and equilibrium parameters of the N-O and O-N acyl transfer reactions to the basicity of the nucleophile and outgoing group were obtained.
Heats of acyl transfer from N-, O-acyl salts of organic bases to 4-dimethylaminopyridine N-oxide
Rybachenko,Titov,Gol'dshtein,Grebenyuk,Chotii,Semenova
, p. 192 - 196 (2007/10/03)
The heats of acyl exchange reactions between a number of N-, O-acyl salts and 4-dimethylaminopyridine N-oxide and 4-dimethylaminopyridine were measured in solutions of aprotic solvents. The spectroscopic characteristics and the electrolytic dissociation constants of the salts were obtained and the thermochemical and structural data compared. Changes in the heats under structural actions are satisfactorily described by a two-parameter correlation equation including the ionization potentials of bases and the integrated intensities of salt C=O stretching vibrations as variables.
