Efficient, convenient and reusable polyaniline-sulfate salt catalyst for the synthesis of quinoxaline derivatives

Biologically important quinoxaline derivatives were prepared in excellent yields using very low amount of reusable polyaniline-sulfate salt catalyst from various 1,2-dicarbonyls and aromatic 1,2-diamines. This methodology is also very much useful for the synthesis of new quinoxaline derivative using sterically hindered diamine.

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