F Jafarnia - Department of chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
H Sanaeishoar - Department of chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

A novel catalytic system based on nanoparticle functionalized magnetic mesoporous silica was prepared nano-Fe3O4 encapsulated-silica particles For preparation of 2H-indazolo[2,1-b] phthalazine-trione derivatives. The procedure involves three-component condensation of aromatic aldehydes, dimedone and phthalhydrazide under solvent-free conditions. The catalyst could be easily separated from the final product using an external magnet and reused several times without consequential loss of reactivity.

magnetic nanoparticles, aromatic aldehydes, dimedone, solvent-free