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OXIDATION OF URAZOLES TO THEIR CORRESPONDING TRIAZOLINEDIONES UNDER MILD AND HETEROGENEOUS CONDITIONS VIA IN SITU GENERATION OF NOIOX

ABSTRACT

A combination of periodic or iodic acids and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under mild and heterogeneous conditions with good yields.