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Note | Regular issue | Vol 81, No. 11, 2010, pp.2617-2623
Published online, 10th September, 2010
DOI: 10.3987/COM-10-12045
Synthesis of 5,7-Dibromotropono[c]pyrazole Derivatives

Yang Li and Wentao Gao*

*Institute of Superfine Chemicals, School of Chemistry and Chemical Engineering, Bohai University, 19 Keji Road, Jinzhou 121000, China


A facile synthesis of some novel 5,7-dibromotropono[c]pyrazole derivatives via the condensation reaction of 3-acetyl-5,7-dibromotropolone with aromatic hydrazines is described. All the synthesized compounds were obtained in good yields of 67-88% and their structures were characterized by IR, 1H NMR, MS, and elemental analysis.