Kourosh Motevalli - Department of Applied Chemistry, Islamic Azad University, South Tehran Branch, Tehran, Iran
Masoud Rafeezadeh - textile engineering department, technical & engineering faculty, Islamic azad university, shahre rey branch,Tehran, Iran
Zahra Yahgobi - Faculty of Industrial Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran

In this letter,In presence of iridium(VI), the reaction between L-tryptophan and diperiodatocuprate(III) DPC in alkaline medium exhibits 1:4 stochiometry (L-tryptophan:DPC). The reaction shows first-order dependence on [DPC] and [iridium(VI)], less than unit order in both [L-tryptophan] and [alkali], and negative fractional order in [periodate]. The active species of catalyst and oxidant have been identified. The main products were identified by spectral studies and spot test. The probable mechanism was proposed and discussed.

Kinetic; Catalyzed Oxidation Reaction; Aqueous Alkaline Medium; First-order