Mild Bronsted basic ionic liquids catalyzed three component synthesis of pyrazolo[1,2-a][1,2,4]triazole-1,3-dione and 2-amino-3- cyano-5,10-dioxo-4-phenyl-5,10-dihydro-4H-benzo[g]chromene derivatives

Pyrazolo[1,2-a][1,2,4]triazole-1,3-dione derivatives were synthesized via a three componentreaction of arylaldehydes, 4-phenylurazole and malononitrile in the presence of a catalytic amount of2-hydroxyethylammonium formate and 2-hydroxyethylammonium acetate as effective mild basic ionicliquids, without using any additional co-catalyst, under solvent-free conditions at room temperaturein good yields. ionic liquids as catalysts were recovered and reused. in addition, the preparation of2-amino-3-cyano-5,10-dioxo-4-phenyl-5,10-dihydro-4h-benzo[g]chromene derivatives from the reactionof arylaldehydes, malononitrile and 2-hydroxy-1,4-dihydronaphthalene-1,4-dione under solventfreeconditions at ambient temperature in the presence of mentioned catalysts is reported.