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1,3-dibromo-5,5-dimethylhydantoin (DBH): A novel and efficient catalyst for the synthesis of quinoxaline derivatives under solvent-free conditions

Setareh Habibzadeh

1,3-Dibromo-5,5-dimethylhydantoin (DBH) was found to be an effective catalyst for the condensation of 1,2-diamines with 1,2-dicarbonyl compounds to afford the corresponding quinoxaline derivatives in excellent yields under mild reaction conditions.