Kinetic and mechanistic study on oxidation of 1- Phenyl ethanol by polymer supported Cr (VI) A free radical intervention

N. P. Hilage¹ and V. Y. Sonawane²*

¹Department of Chemistry, Shivaji University, Kolhapur - 416 004 (India). ²Bhausaheb Nene College , Pen-Raigad - 402 107 (India).

ABSTRACT:

The reaction of 1- phenyl ethanol was found to proceed through ester formation. The ester thus decomposes in a slow step to produce chromium (IV).Since our oxidant was supported on Ambersep 900 (OH- ) , the intermediate chromium (IV) will further oxidize another molecule of 1- phenyl ethanol generating a free radical in a fast step. The free radical subsequently reacts with another oxidant site in the polymeric reagent in a fast step leading to the formation of chromium (V).The intermediate chromium(V) in the last step reacts with 1- phenyl ethanol to produce acetophenone. There is no evidence of any systematic investigation in the literature on the kinetics of 1- phenyl ethanol by polymer supported chromic acid. Hence, the present work is undertaken with a view to seek the reaction kinetics and the activation parameters have been computed with respect to the slow step.

KEYWORDS:

Kinetics; mechanistic; 1-phenyl ethanol; polymer supported; free radical; oxidation

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Copy the following to cite this article: Hilage N. P, Sonawane V. Y. Kinetic and mechanistic study on oxidation of 1- Phenyl ethanol by polymer supported Cr (VI) A free radical intervention. Orient J Chem 2009;25(2).

Copy the following to cite this URL: Hilage N. P, Sonawane V. Y. Kinetic and mechanistic study on oxidation of 1- Phenyl ethanol by polymer supported Cr (VI) A free radical intervention. Available from: http://www.orientjchem.org/?p=11391