Immobilization of CdCl₂ on filamentous silica nanoparticles as an efficient catalyst for the solvent free synthesis of some amidoalkyl derivatives

Abstract

Due to desirable properties of filamentous silica nanoparticles (KCC-1), these compounds can be considered as appropriate support for the preparation of heterogeneous catalysts. In this study, immobilized CdCl₂ on modified KCC-1 surfaces was fruitfully prepared. The structure of prepared catalyst was confirmed by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), brunauer-emmett-teller (BET) and energy dispersive X-Ray (EDX) analysis. The efficiency of obtained solid acid catalyst was studied for the synthesis of some amidoalkyl naphthole and amidoalkyl naphthoquinones through a multicomponent reaction in solvent free conditions. The structure of all obtained products was characterized by analytical and spectroscopic methods.

Keywords:

• Filamentous silica nanoparticles (KCC-1)
• heterogeneous catalyst
• amidoalkyl β-naphtholes
• amidoalkyl naphthoquinone
• KCC-1/ECH-Meg/CdCl₂

Acknowledgements

We are grateful to the University of Kashan, for supporting this work.

Disclosure statement

No potential conflict of interest was reported by the authors.