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Title

Nano-peanut shell-OSO3H: Green and natural-based renewable nanocatalyst for one-pot synthesis of dihydropyrano[3, 2-b]chromenedione derivatives

Pages

 Start Page 155 | End Page 162

Abstract

 Nano-peanut shell‑ OSO3H nanoparticles were simply prepared and characterized by the scanning electron microscopy (SEM), transmission electron microscope (TEM), fourier transform infrared (FT-IR), energy dispersive X-ray spectroscopy (EDX), and thermal analysis techniques (TGA/DTG). The catalytic activity of nano-peanut shell‑ OSO3H was studied in the synthesis of biologically important 4H-pyran derivatives. The reaction involves the use of Kojic acid, 5, 5-dimethyl-1, 3-cyclohexanedione, and various benzaldehydes. A wide range of benzaldehydes is compatible in this reaction, producing excellent yields in a short time. The successful synthesis of dihydropyrano[3, 2-b]chromenedione derivatives shows that nano-peanut shell‑ OSO3H has high catalytic activity and can be effectively used as a green catalyst.

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