One-Pot Access to Diverse Functionalized Pyran Annulated Heterocyclic Systems Using SCMNPs@BPy-SO3H as a Novel Magnetic Nanocatalyst

Ke Chen (Hunan Polytechnic of Enviroment and Biology, Hunan, 421005)
Guangzu He (Hunan Polytechnic of Enviroment and Biology, Hunan, 421005)
Qiong Tang (Hunan Polytechnic of Enviroment and Biology, Hunan, 421005)
Qahtan A. Yousif (Department of Chemistry, College of Education, University of Al-Qadisiyah)

Bulletin of Chemical Reaction Engineering & Catalysis
2020: BCREC Volume 15 Issue 2 Year 2020 (August 2020)

The SCMNPs@BPy-SO3H catalyst was prepared and characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Vibrating Sample Magnetometry (VSM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Afterwards, its capability was efficiently used to promote the one-pot, three-component synthesis of pyrano[2,3-c]pyrazole and 2-amino-3-cyano-pyrano[3,2-c]chromen-5(4H)-one derivatives. The strategy resulted in the desired products with excellent yields and short reaction times. The SCMNPs@BPy-SO3H catalyst was readily recovered using a permanent magnetic field and it was reused in six runs with a slight decrease in catalytic activity. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).