Utilization of environmentally friendly catalyst Fe3O4 from iron rust in the synthesis of spiropiperidine derivative

This study aims to synthesize Fe3O4 nanoparticles using iron rust and evaluate the catalyst's ability in spiropiperidine synthesis. Fe3O4 was synthesized using the thermal decomposition method with palmitic acid as a capping agent. Characterization techniques, including XRD, IR, SEM-EDX, TEM, and PSA confirmed the formation of magnetic Fe3O4 with a well-defined cubic crystal structure, displaying a size of approximately 8.5 nm. Under optimal conditions, spiropiperidine synthesis using the Fe3O4 catalyst achieved an 84.2 % yield and could be reused for up to five runs. These findings highlight the potential of Fe3O4 as an efficient and reusable catalyst for green synthesis applications.