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ABSTRACT In the present work, a new magnetically recyclable nanocomposite catalyst was designed, prepared, and characterized by Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM) images, X-ray diffraction… Click to show full abstract
ABSTRACT In the present work, a new magnetically recyclable nanocomposite catalyst was designed, prepared, and characterized by Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM) images, X-ray diffraction (XRD) pattern, energy-dispersive X-ray (EDX), vibrating sample magnetometer (VSM), and transmission electron microscopy (TEM) analyses. Then, the catalytic activity of the prepared Fe3O4/PEO/SO3H nanocatalyst was examined on multicomponent synthesis of 2-amino-3-cyano-4H-pyranes. Short reaction time, room temperature, good-to-excellent yields, easy catalyst separation and catalyst reusability, environmentally benign and efficient conditions are some advantages of this green protocol. GRAPHICAL ABSTRACT
Journal Title: Green Chemistry Letters and Reviews
Year Published: 2018
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