Chemistry Letters, Vol.30, No.2, 164-165, 2001
Oxidation of urazoles to triazolinediones with benzyltriphenylphosphonium peroxymonosulfate under solvent-free conditions
Benzyltriphenylphosphonium peroxymonosulfate (PhCH2Ph3PHSO5) in the presence of AlCl3 was used as an effective oxidizing reagent for the oxidation of urazoles to their corresponding triazolinediones in high yields under solvent-free conditions.