پديدآورندگان :
Ghodsi F fa.ghodsi@yahoo.com Department of Chemistry, University of Sistan and Baluchestan, P. O. Box 98135-674, Zahedan, Iran , Habibi-Khorassani S.M Department of Chemistry, University of Sistan and Baluchestan, P. O. Box 98135-674, Zahedan, Iran , Shahraki M Department of Chemistry, University of Sistan and Baluchestan, P. O. Box 98135-674, Zahedan, Iran , Hashemi-Shahri M Department of Chemistry, University of Sistan and Baluchestan, P. O. Box 98135-674, Zahedan, Iran
كليدواژه :
Kinetics , Mechanism , UV Spectroscopy, Meldrum’s acid
چكيده فارسي :
The kinetics and mechanistic investigation of the reaction between dimethyl acetylendicarboxcylate (DMAD) and Meldrum’s acid has been studied in ethanol environment with triphenylarsine as a catalyst using UV/vis spectrophotometry. The reaction followed second order kinetics. In the kinetics study, activation energy and parameters (Ea, ∆Hǂ, ∆Sǂ and ∆Gǂ) were determined. Also, reaction rate is accelerated by increasing the temperature and the dielectric constant of solvent.
