MnFe2O4 nanoparticle as a new and magnetically separable nanocatalyst for solvent-free synthesis of dihydropyrano [2,3-c]pyrazole derivatives

Abstract

This study focused on synthesising MnFe2O4 (Manganese Ferrite) nanoparticles using the sol-gel method. We then applied these nanoparticles as a catalyst for synthesising dihydropyrano[2,3-c]pyrazole derivatives at a specific temperature. The significant advantage of this process is that it requires only short reaction times and no solvents. Additionally, the crude pyranopyrazole derivatives can be purified through a simple recrystallization process. The catalyst is reusable, magnetically separable and maintains its activity even after five uses. The chemical integrity of the catalyst was confirmed through FT-IR, 1H NMR, and 13C NMR techniques.