Kinetic of iodination of phenol and substituted phenols by pyridinium iodochloride in methanol

Authors

P.G. Department of Chemistry, Yeshwant Mahavidyalaya, Nanded-431 602, India.

Abstract

The kinetics of iodination of the phenol and substituted phenols using pyridinium
iodochloride in methanol has been studied under varying conditions. The rates show first order
kinetics each in pyridinium iodochloride and phenols. The rates of reactions are measured at
different temperature and activation parameters for all phenols computed. Hammett plot is found
to be valid and the corrletion between the enthalpies and free energies of activations is
reasonably linear with an isokinetic temperature 359.55 K. Similarly log A values of all the
phenols are optimized corresponding to Ea of phenols through the equation, log A = log kobs + Ea
/ 2.303 RT.

Keywords


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