Fe3O4@nSiO2@mSiO2/DBU: A Novel and Effective Basic Magnetic Nanocatalyst in the Multicomponent One Pot Synthesis of Polyhydroacridines and Polyhydroquinolines

In this research work, magnetic nanoparticles (NPs) of Fe3O4@nSiO(2)@mSiO(2)/DBU were designed as a novel effective heterogeneous catalyst for the production of polyhydroacridines and polyhydroquinolines. For characterizing the NPs, the Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), vibrating sample magnetometry (VSM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and N(2)adsorption-desorption measurement (BET isotherm) techniques were used. Some advantages of this magnetic nanoparticle include: use of commercially available materials to make catalysts, appropriate and simple operation, excellent yields, appropriate catalytic activity, simple work-up, and recycle and reuse the catalyst up to seven times without considerable change in its catalytic activity.

Automated summary

In this research, Fe3O4@nSiO(2)@mSiO(2)/DBU magnetic nanoparticles were designed as an effective catalyst for the production of polyhydroacridines and polyhydroquinolines. The advantages of this nanoparticle include the use of readily available materials, simple operation, high yields, appropriate catalytic activity, easy work-up, and the ability to recycle and reuse the catalyst up to seven times without significant loss of activity.