Reaction of Thiourea Dioxide and Hydrogen Peroxide with Coumarin

摘要

The system thiourea dioxide-hydrogen peroxide is found to effectively hydroxylate coumarin in aqueous solutions. The hydroxyl radical reacting with coumarin is shown to result from decomposition of the complex thiourea dioxide-H2O2. The obtained data are compared to the results of investigation of the reactions occurring in the system thiourea dioxide-H2O2 with terephthalic acid.