2008 Triazole derivatives R 0280 N-Bromo Reagent Mediated Oxidation of Urazoles to Their Corresponding Tri- azolinediones under Mild and Heterogeneous Conditions. — Urazoles, e.g. (I) and (III), and bisurazoles (V) are oxidized to their triazolinediones using four agents. All reactions are performed under mild and completely heterogeneous conditions to afford the products in good to excellent yields. This reaction protocol is also applied to the oxidation of new urazoles [cf. (Id) and (If)]. — (ZOLFIGOL*, M. A.; CHEHARDOLI, G.; GHAEMI, E.; MADRAKIAN, E.; ZARE, R.; AZADBAKHT, T.; NIKNAM, K.; MALLAKPOUR, S.; Monatsh. Chem. 139 (2008) 3, 261-265; Fac. Chem., Bu-Ali Sina Univ., Hamedan, Iran; Eng.) — H. Hoennerscheid 22- 137

ChemInform Abstract: N-Bromo Reagent Mediated Oxidation of Urazoles to Their Corresponding Triazolinediones under Mild and Heterogeneous Conditions

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Page 1: ChemInform Abstract: N-Bromo Reagent Mediated Oxidation of Urazoles to Their Corresponding Triazolinediones under Mild and Heterogeneous Conditions

2008

Triazole derivativesR 0280 N-Bromo Reagent Mediated Oxidation of Urazoles to Their Corresponding Tri-

azolinediones under Mild and Heterogeneous Conditions. — Urazoles, e.g. (I) and (III), and bisurazoles (V) are oxidized to their triazolinediones using four agents. All reactions are performed under mild and completely heterogeneous conditions to afford the products in good to excellent yields. This reaction protocol is also applied to the oxidation of new urazoles [cf. (Id) and (If)]. — (ZOLFIGOL*, M. A.; CHEHARDOLI, G.; GHAEMI, E.; MADRAKIAN, E.; ZARE, R.; AZADBAKHT, T.; NIKNAM, K.; MALLAKPOUR, S.; Monatsh. Chem. 139 (2008) 3, 261-265; Fac. Chem., Bu-Ali Sina Univ., Hamedan, Iran; Eng.) — H. Hoennerscheid

22- 137