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, China
Guangzu He  -  Hunan Polytechnic of Enviroment and Biology, China
Qiong Tang  -  Hunan Polytechnic of Enviroment and Biology, China
Qahtan A.Yousif  -  Department of Chemistry, College of Education, University of Al-Qadisiyah, Iraq
Received: 10 Dec 2019; Revised: 18 Mar 2020; Accepted: 24 Mar 2020; Published: 1 Aug 2020; Available online: 30 Jul 2020.
Open Access Copyright (c) 2020 Bulletin of Chemical Reaction Engineering & Catalysis
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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 BCREC Group. All rights reserved


Keywords: Multicomponent reaction; Solvent-free conditions; Magnetic nanocatalyst; SCMNPs@BPy-SO3H, pyrano[2,3-c]pyrazole; 2-amino-3-cyano-pyrano[3,2-c]chromen-5(4H)-one

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