In the present work, we were interested in the synthesis of green and novel magnetic nanocatalyst by anchoring La complex on Fe3O4. The nanocatalyst was successfully synthesized and characterized by FT-IR, SEM, TGA, XRD, EDX, and ICP techniques. The designed procedure shows many benefits such as short reaction time, high yield, excellent purity, eco-friendly catalyst, easy workup and easy recovery from the reaction mixture by external magnet.