Trichloroisocyanuric acid was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under both heterogeneous and also solvent free conditions with excellent yields at room temperature. ... 4-Substituted-1,2,4-triazole -3,5-diones (TADs) are notable for their ability to participate in a wide range of reactivity and reaction types, eg [4+2] [1] [2] and [2+2] [3] cycloadditions, ene reactions, [4] electrophilic ...