1,4-Diazabicyclo[2.2.2]octane 1,4-Bis(oxide)-Bis(hydrogen peroxide)/MClx as a Novel Heterogeneous System for the Oxidation of Urazoles under Mild Conditions

A combination of inorganic hydrolyzable chloride salts and 1,4-diazabicyclo[2.2.2]octane 1,4-bis(oxide)-bis(hydrogen peroxide), DABCO-DNODP, in the presence of wet SiO2 is 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 to excellent yields.