European Journal of Chemistry 2023, 14(3), 385-392 | doi: | Get rights and content

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Magnetically recoverable nanocatalyst for the synthesis of pyranopyrazoles: CoFe2O4@SiO2-HClO4

Nikita Vinod Thakare (1) orcid , Anand Shankar Aswar (2,*) orcid , Nilesh Govindrao Salunkhe (3) orcid

(1) Department of Chemistry, Elphinstone College, Homi Bhabha State University, Mumbai, 400032, India
(2) Department of Chemistry, Sant Gadge Baba Amravati University, Amravati, 444602, India
(3) Department of Chemistry, Sant Gadge Baba Amravati University, Amravati, 444602, India
(*) Corresponding Author

Received: 30 May 2023 | Revised: 08 Jul 2023 | Accepted: 02 Aug 2023 | Published: 30 Sep 2023 | Issue Date: September 2023


The multiheterocyclic ring system shows valuable pharmaceutical and biological activities. In the present study, a microwave-assisted three-component reaction between aryl aldehyde, malononitrile, and 5-methyl-2,4-dihydro-3H-pyrazole-3-one led to the synthesis of pyrano[2,3-c]pyrazoles has been described. The reaction was carried out under solvent-free conditions in the presence of a new magnetically recoverable nanocatalyst (CoFe2O4@SiO2-HClO4). The reported protocol offers several advantages such as being environmentally benign, being rapid, inexpensive, having high atom and step economy, and being facile. The simple method of catalyst preparation, easy magnetic recovery, and reusability of the catalyst for four runs are notable features of the nanocatalyst. Antibacterial activity of all synthesized compounds was tested against Escherichia coli and Staphylococcus aureus. All synthesized compounds showed promising biological activity and may be used as a potential antibacterial candidate in biological science.


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European Journal of Chemistry


Solvent-free; Pyranopyrazoles; Microbial activity; Microwave-assisted; Multicomponent reaction; Magnetically recoverable catalyst

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DOI: 10.5155/eurjchem.14.3.385-392.2457

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Sant Gadge Baba Amravati University, Amravati, 444602, India.


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How to cite

Thakare, N.; Aswar, A.; Salunkhe, N. Eur. J. Chem. 2023, 14(3), 385-392. doi:10.5155/eurjchem.14.3.385-392.2457
Thakare, N.; Aswar, A.; Salunkhe, N. Magnetically recoverable nanocatalyst for the synthesis of pyranopyrazoles: CoFe2O4@SiO2-HClO4. Eur. J. Chem. 2023, 14(3), 385-392. doi:10.5155/eurjchem.14.3.385-392.2457
Thakare, N., Aswar, A., & Salunkhe, N. (2023). Magnetically recoverable nanocatalyst for the synthesis of pyranopyrazoles: CoFe2O4@SiO2-HClO4. European Journal of Chemistry, 14(3), 385-392. doi:10.5155/eurjchem.14.3.385-392.2457
Thakare, Nikita, Anand Shankar Aswar, & Nilesh Govindrao Salunkhe. "Magnetically recoverable nanocatalyst for the synthesis of pyranopyrazoles: CoFe2O4@SiO2-HClO4." European Journal of Chemistry [Online], 14.3 (2023): 385-392. Web. 10 Dec. 2023
Thakare, Nikita, Aswar, Anand, AND Salunkhe, Nilesh. "Magnetically recoverable nanocatalyst for the synthesis of pyranopyrazoles: CoFe2O4@SiO2-HClO4" European Journal of Chemistry [Online], Volume 14 Number 3 (30 September 2023)

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