One-pot and facile synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones using nano-NiO under solvent-free conditions


In this article, nano-NiO as a heterogenuos and recyclable catalyst has been used for the synthesis of 1H-Pyrazolo[1,2-b]Phthalazine-5,10-Diones by the reaction of malononitrile, aldehydes and phthalhydrazide under solvent-free conditions. Short reaction time, reusability easy work up and high yields of products are the advantages of this procedure.