The First Report on the Catalytic Oxidation of Urazoles to Their Corresponding Triazolinediones via in situ Catalytic Generation of Br+ Using Periodic acid or Oxone®/KBr system

A combination of periodic acid or oxone^® and a catalytic amount of KBr in the presence of few drops of water, were used for the catalytic oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under mild and heterogeneous conditions with moderate to excellent yields.