Fe3O4@SiO2@NCs@Al2O3 as a Nanocatalyst for Efficient One-pot Synthesis of Tetrahydrobenzo[b]pyran in Water

Authors

• Neda Daria * ¹
• Koroush Ebrahimzadeh ^{2, 3}
• Naghmeh Darya * ¹

1. Department of chemistry, Faculty of Science, University of Guilan, Rasht P.O. Box 41335-1914, Iran.
2. Department of Education Gilan, Dr behzad research institute, Rasht, Iran.
3. Islamic Azad University, Sama Rasht Branch, Rasht, Iran.

Abstract

In this research, we reported Fe₃O₄@SiO₂@NCs@Al₂O₃ [FSNCA] nanoparticles as an efficient catalyst for the synthesis of Tetrahydrobenzopyrans (THBPS) in water solvent at room temperature with short reaction time. The catalyst exhibits excellent catalytic activity, selectivity, and recyclability. The nanocatalyst structure was characterized by FT-IR, SEM, XRD, TGA, VSM, and EDS. There are significant advantages of using the FSNCA nanocatalyst such as the primary benefit is the increase in production efficiency. By enabling a one-pot synthesis process, this nanocatalyst decreases the stages required for reaction, reducing time and energy consumption. Furthermore, the possibility of recycling the catalyst contributes to economic efficiency, minimizing waste production, thereby aligning with the principles of green chemistry.

Highlights

1.       This research describes the catalytic activity of a nanocatalyst made of the materials available which are easily and quite prevalent in nature.

2.       The nanoparticles efficiently catalyze the synthesis of Tetrahydrobenzo[b]pyran derivatives and this method is superior in terms of the reaction temperature, green solvent and yields.

3.       No side reactions, Product’s purity and yield enhanced by Fe₃O₄@SiO₂@NCs@Al₂O₃ as green magnetic catalyst.

4.       Clean separation and recyclability of the catalyst

5.       The article meet the principles of Green chemistry

Graphical Abstract

Keywords

• Green chemistry
• Multicomponent reactions
• Tetrahydrobenzo[b]pyran
• Magnetic nanocatalyst [Fe3O4@SiO2@NCs@Al2O3]