Applied Catalysis A: General, Vol.394, No.1-2, 48-51, 2011
Easy access to quinoxaline derivatives using alumina as an effective and reusable catalyst under solvent-free conditions
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. (C) 2010 Elsevier B.V. All rights reserved.