Green Synthesis of Thiazole Derivatives using Multi-component Reaction of Aldehydes, Isothiocyanate and Alkyl Bromides: Investigation of Antioxidant and Antimicrobial Activity

Author(s): Naghmeh Faal Hamedani*, Leila Azad, Shahin Shafiee, Annataj Noushin

Journal Name: Combinatorial Chemistry & High Throughput Screening
Accelerated Technologies for Biotechnology, Bioassays, Medicinal Chemistry and Natural Products Research

Volume 24 , Issue 1 , 2021

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Aims & Objective: In this work, the multicomponent reaction of aldehydes, benzoylisothiocyanate and alkyl bromides in the presence of ammonium acetate, sodium cyanide and a catalytic amount of KF/Clinoptilolite nanoparticles (KF/CP NPs) in the water at 100oC was investigated.

Materials and Methods: In these reactions, thiazole derivatives were produced in good to excellent yields and short time. Also, the antioxidant activity was studied for some newly synthesized compounds using the DPPH radical trapping and reducing of ferric ion experiments and comparing results with the synthetic antioxidants (TBHQ and BHT).

Results: As a result, the compounds 4b showed excellent DPPH radical trapping and reducing the strength of ferric ion. These compounds have biological potential because of the thiazole core. For this reason, the antimicrobial activity of some synthesized compounds was studied by employing the disk diffusion test on Gram-positive bacteria and Gram-negative bacteria.

Conclusion: The results of the disk diffusion test showed that these compounds prevented bacterial growth.

Keywords: Alkyl bromides, aldehyde, multicomponent reactions, ammonium acetate, sodium cyanide, KF/Clinoptilolite nanoparticles.

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Article Details

Year: 2021
Published on: 13 January, 2021
Page: [88 - 97]
Pages: 10
DOI: 10.2174/1386207323666200709165325
Price: $65

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