Green, Natural and Low Cost Xanthum Gum Supported Fe3O4 as a Robust Biopolymer Nanocatalyst for the One-Pot Synthesis of 2-Amino-3-Cyano-4H-Pyran Derivatives

Today, due to expanding the demand for inexpensive catalysts, recyclable magnetic nanocatalysts immobilized on polysaccharides have found more superiorities versus classical heterogeneous catalysts. Xanthan gum is a polysaccharide that contains acidic features and low-cost prices has various applications. Herein, it was demonstrated that xanthan gum can attract more attentions in catalysis science and technology. Therefore, magnetically recoverable Fe3O4@xanthan gum biopolymer nanocatalyst was prepared by in-situ method and used for the synthesis of 2-amino-3-cyano-4H-pyran derivatives via a multicomponent reaction at room temperature in ethanol. The characterization of Fe3O4@xanthan gum biopolymer nanocatalyst was carried out by vibrating sample magnetometer (VSM) curves, energy-dispersive X-ray (EDX) analysis, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), powder X-ray diffraction (XRD) pattern, field emission scanning electron micrograph (FESEM) image and H-1 and C-13 nuclear magnetic resonance (NMR) spectra.

Automated summary

Today, due to the increasing demand for inexpensive catalysts, recyclable magnetic nanocatalysts immobilized on polysaccharides have shown more advantages compared to traditional heterogeneous catalysts. Xanthan gum, a low-cost polysaccharide with acidic features, has a wide range of applications in catalysis science and technology. The magnetically recoverable Fe3O4@xanthan gum biopolymer nanocatalyst was prepared by in-situ method, demonstrating its potential for efficient synthesis of compounds.