Kinetics of Oxidation of Indole in High Indole Concentration Range by Bromamine-B in Alkaline Medium Catalysed by Os(VIII)

T. Demappa* and S. Ananda†

Department of Studies in Polymer Science, University of Mysore, Sir. M.V.P.G. Centre, Mandya-571 402, India


The kinetics of oxidation of indole (In) in bigh indole concentration
range by sodium N-bromobenzene sulphonamide (BAB) in
alkaline medium in presence of OSO4 catalyst have been investigated
at 30°C. The reaction rate shows a first order dependence
of rate on [BAB]o and [Indole], and inverse first order dependence
of rate on [OH- ] and first order on [OSO4]. Addition of halide ions
and variation of ionic strength and dielectric constant of the medium
do not have any sigtlflcant effect on the reaction rate. Thermodynamic
parameters have been evaluated.


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  • Asian J. Chem. /
  •  2000 /
  •  12(4) /
  •  pp 1282-1290