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Fe3o4 nanoparticles: A highly efficient and easily reusable catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions

Ghasemzadeh Ali Mohammad (Department of Chemistry, Qom Branch, Islamic Azad University, Qom, I.R. Iran)
Safaei-Ghomi Javad (Department of Chemistry, Qom Branch, Islamic Azad University, Qom, I.R. Iran)
Zahedi Safura (Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. Iran)

Magnetically separable Fe3O4 nanoparticles supply environmentally friendly procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene and 1,8-dioxo-octahydro-xanthene derivatives. These compounds were obtained in high yields and short reaction times by the reaction of dimedone and 2-naphthol with various aromatic aldehydes under solvent-free conditions. The catalyst coluld be easily recovered using an external magnet and reused for six cycles with almost consistent activity.

Keywords: xanthenes, nanoparticles, solvent-free condition, magnetic catalyst, Fe3O4