Kinetic Study of Beckmann rearrangement of Anti Benzaldoximes in Perchloric acid

الملخص

The paper deals with kinetic data of Beckmann rearrangement of substituted anti
benzaldoxime to substituted benzoic acid and ammonia by action of perchloric acid in
10% ethanol by volume . A spectrophotometric method was used for this
investigation , by following the decay absorbances of benzaldoximes at the proper
analytical wavelengths . The reaction was found to obey a pseudo first order kinetic
with respect to oxime . The observed rate constants k were evaluated in the
temperature in the range 323-353 K and found to depend on temperature and donor or
acceptor property of the substituent as well as its position on the aromatic rings .
Finally the activation parameters for Beckmann rearrangement reactions were
calculated and discussed .