A Novel Magnetic Nanocomposite (Fe₃O₄@Saponin/Cr(III)) as a Potential Recyclable Catalyst for the Synthesis of β- Acetamidoketones Derivatives

Abstract

A natural based magnetic catalyst (nano-Fe₃O₄@Saponin/Cr(III)) was synthesized using CrCl_3.6H₂O compounds on a nano-Fe₃O₄@Saponin surface as a novel recyclable magnetic catalyst. Nano-Fe₃O₄@Saponin/Cr(III (has been synthesized by coprecipitation of salts of Fe³⁺ and Fe²⁺ via eco-friendly solvent in saponin. Structural, morphological, and magnetic features of the synthesized novel catalyst were characterized by various methods like energy-dispersive X-ray spectroscopy (EDS), Brunauer-Emmett-Teller (BET), thermo-gravimetric analysis (TGA), high-resolution transmission electron microscopy (HR-TEM), vibrating sample magnetometer (VSM), Fourier transform infrared (FT-IR) spectroscopy, inductively coupled plasma (ICP), X-ray diffraction (XRD) and scanning electron microscopy (SEM). It is totally accepted that heterogeneous catalysts show appropriate efficiency in synthesizing three-component reactions among 4-hydroxycoumarin, aromatic aldehydes, and amides under eco-friendly solvent, at 80 °C. The procedure presented in this paper is an eco-friendly one that provides so many benefits such as higher yield, easier work-up, simply recovered by magnetic decantation, short reaction time, reusability for multiple and consecutive reactions without remarkable activity reduction.

Keywords:

• Nano-Fe₃O₄
• saponin
• chromium chloride
• β-Acetamido ketones
• green chemistry

Disclosure statement

The authors (Marziyeh Kiani, Hossein Anaraki-Ardakani, Neda Hasanzadeh, Ayeh Rayatzadeh) declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Funding

This work was supported by the research facilities of Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.