Easy access to quinoxaline derivatives using alumina as an effective and reusable catalyst under solvent-free conditions Original Research Article

Alumina as a cheap, heterogeneous and reusable catalyst can provide environmentally friendly alternatives for synthesis of quinoxaline derivatives via condensation of 1,2-diamines and 1,2-dicarbonyl compounds under solvent-free conditions. The products could be separated simply from catalyst by filtration and the catalyst could be recycled and reused for several times without noticeably decreasing in catalytic activity.