Fe3O4@SiO2@(BuSO3H)3 synthesis as a new efficient nanocatalyst and its application in the synthesis of heterocyclic [3.3.3] propellane derivatives

Abstract

The acidic agent (BuSO3H) coated on core‐shell Fe3O4 nanomagnetic particles was successfully designed and synthesized. It was characterized and confirmed by different techniques such as FT‐IR spectroscopy, scanning electron microscopy vibrating sample magnetometer, X‐Ray diffraction, energy dispersive X-ray and Thermogravimetric analysis. The application of Fe3O4@SiO2@(BuSO3H)3 as an efficient catalyst in the synthesis of propellane derivatives was evaluated by the domino reaction of acenaphthenequinone, malono derivatives, primary amines and β-ketoester derivatives under the solvent-free condition at 60 °C.