Kinetics of Oxidation of N,N'-Dimethylaniline by Chromic Acid

Abstract

The kinetics of oxidation of N,N-dimethylaniline by chromic
acid have been studied in 1% aqueous acetic acid medium. The
order of reaction between chromic acid and N,N-dimethylaniline is
zero and one with respect to chromic acid and N,N-dimethylaniline
respectively. The rate constant was found to depend upon the concentration
of HCI and H₂SO₄. The primary salt effect on the rate
of oxidation is negligible. The reaction rate increases with decrease
of the dielectric constant of the medium. Rate increases by the
addition of catalyst such as Cu²⁺, Ag⁺ and retarded by the addition
of Mn²⁺. Various thermodynamic parameters have been evaluated.
A plausible mechanism constant with the experimental results has
been proposed.