A novel poly(ethyleneoxide)-based magnetic nanocomposite catalyst for highly efficient multicomponent synthesis of pyran derivatives

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

KEYWORDS:

• Nanocatalyst
• multicomponent reaction
• Fe₃O₄/PEO/SO₃H
• pyran
• green chemistry

Acknowledgement

The authors gratefully acknowledge the partial support from the Research Councils of the Iran University of Science and Technology.

Disclosure statement

No potential conflict of interest was reported by the authors.

Notes on contributors

Dr. Ali Maleki was born in Mianeh, East Azerbaijan, Iran, in 1980. He received his Ph.D. in Organic Chemistry in 2009. He started his career as an Assistant Professor in Iran University of Science and Technology (IUST), Iran, in 2010, where he is currently Associate Professor. His research interests focus on design and development of novel catalysts, nanochemistry, pharmaceutical compounds, materials science, sustainable and green chemistry. He has published more than 120 ISI-JCR articles. He has been selected as a distinguished researcher of IUST within 2010-2018. Dr. Maleki was awarded the 2016 IUPAC-CHEMRAWN VII prize for green chemistry.

Dr. Mojtaba Azizi received a Master's degree in Science in Organic Chemistry from K. N. Toosi University of Technology in 2008. He obtained his Ph.D. in Organic Chemistry at IUST under supervision of Dr. Maleki. He is presently Assistant Professor of University and has several journal publications. His research areas include synthesis of thermally stable polymers, nanochemistry (nanocatalyst, nanocomposite based on organic, inorganic and biopolymers), phytochemistry, synthesis of organic compounds, heterocyclic and biology active molecules and green chemistry.

Dr. Zeynab Emdadi obtained her Bachelor Science degree in Applied Chemistry from Azad University of Iran in 2004 and a Master of Science in Organic Chemistry from the K. N. Toosi University of Technology, Department of Chemistry in 2008. Her Ph.D. degree in renewable energy was from the National University of Malaysia. She obtained a one-year Postdoctoral Fellow position in Dr. Malekiâ s research group at IUST within 2017-2018.

ORCID

Ali Maleki http://orcid.org/0000-0001-5490-3350