Abstract
Nanosilica molybdic acid (SMA NPs) was founded as an efficient and recyclable nanocatalyst for the synthesis of coumarin derivatives in excellent yields with good purity. Nano-SMA as a new solid acid was characterized by X-ray fluorescence, X-ray diffraction, energy-dispersive X-ray analyzer, transmission electron microscopy and Fourier transform infrared spectroscopy. Coumarin derivatives were obtained via the Pechmann condensation reaction of phenols and β-ketoesters at 80 °C under solvent-free conditions. The main advantages of the present procedure are high yields, shorter reaction time and green chemistry procedure, simple work-up and inexpensive and reusability of the catalyst.
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Financial support from Yasouj University of Iran is gratefully acknowledged.
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Kiani, M., Karami, B. Nanosilica molybdic acid: synthesis, characterization and application as a green and reusable catalyst for the Pechmann condensation. J IRAN CHEM SOC 14, 655–663 (2017). https://doi.org/10.1007/s13738-016-1016-6
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DOI: https://doi.org/10.1007/s13738-016-1016-6