24919-58-2Relevant academic research and scientific papers
An efficient synthesis of 1-acyl-3-arylimidazolidines catalyzed by montmorillonite K-10 clay under microwave irradiation
Caterina, Maria Cristina,Corona, Maria Veronica,Perillo, Isabel,Salerno, Alejandra
experimental part, p. 771 - 781 (2009/06/18)
The synthesis of 1-acyl-3-arylimidazolidines were performed by reaction of N-acyl-N'-arylethylenediamines with formaldehyde and Montmorillonite clay K-10 as a catalyst under microwave irradiation.
Kinetic study on the Acid Hydrolysis of 1-Aryl-2-phenyl-2-imidazolines. Basicity-Rate of Hydrolysis and Structure Relationships
Fernandez, Beatriz M.,Reverdito, Ana M.,Perillo, Isabel A.,Lamdan, Samuel
, p. 1585 - 1588 (2007/10/02)
Rate costants (kobs) of hydrolysis in sulfuric acid-water mixtures at 100 degC for five 1-aryl-2-phenyl-2-imidazolines were determined.The influence of substituents in the phenyl group at N-1 upon the rate of hydrolysis was studied.When the imidazoline ring is considered to be a substituent of the benzene ring at N-1, a good correlation with the Hammett equation is found. In oposition to the behavior in alkaline media it was observed that the reaction rates were enhanced by electron-withdrawing phenyl substituents and reduced by electron-releasing groups providing, similarly, a change in the mechanism of the reaction in the second case that was not observed in the first.Agreeement with the Hammett equation allowed comparison between experimental and "calculated" rate constants which are fairly close.An equation relating the rate constants with the pKa values of the imidazolinium ions is given.
