European Journal of Chemistry 2014, 5(1), 85-90 | doi: | Get rights and content

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Green synthesis, antibacterial activity and computational study of pyrazoline and pyrimidine derivatives from 3-(3,4-dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone

Salman Ahmad Khan (1,*) , Abdullah Mohamed Asiri (2) , Sanjay Kumar (3) , Kamlesh Sharma (4)

(1) Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
(2) Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah 21589, Saudi Arabia
(3) Department of Chemistry, Multani Mal Modi College, Patiala, 147001, Punjab, India
(4) Molecular Science Research Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa
(*) Corresponding Author

Received: 02 Apr 2013 | Accepted: 07 May 2013 | Published: 31 Mar 2014 | Issue Date: March 2014


Various pyrazoline and pyrimidine derivatives were synthesized by the reaction of thiosemicarbazide / phenyl hydrazine / hydrazine hydtate / thiourea / urea with 3-(3,4-dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone under microwave irradiation, which itself was derived from the reaction of 3-acetyl-2,5-dimethylthiophene with 3,4-dimethoxy benzaldehyde. The corresponding pyrazoline and pyrimidine derivatives were obtained in good to excellent yields. All of the new compounds obtained were characterized by IR, 1H NMR, 13C NMR, MS and elemental analyses. The anti-bacterial activity of these compounds were tested in-vitro by the disk diffusion assay against two Gram-positive and two Gram-negative bacteria. The results showed that one of the pyrazoline derivatives is better at inhibiting the growth as compared to chloramphenicol against both types of the bacteria (Gram-positive and Gram-negative). Furthermore, all the molecules were subjected to computational calculation using the density functional theory with B3LYP method to corroborate their antibacterial activities.


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European Journal of Chemistry


Pyrazoline; Pyrimidine; Antibacterial; Chloramphenicol; Density functional theory; 3-(3,4-Dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone

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DOI: 10.5155/eurjchem.5.1.85-90.789

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Funding information

Deanship of Scientific Research (DSR) (Grant No. 130-060-D1433), King Abdulaziz University, Jeddah 21589, Saudi Arabia



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How to cite

Khan, S.; Asiri, A.; Kumar, S.; Sharma, K. Eur. J. Chem. 2014, 5(1), 85-90. doi:10.5155/eurjchem.5.1.85-90.789
Khan, S.; Asiri, A.; Kumar, S.; Sharma, K. Green synthesis, antibacterial activity and computational study of pyrazoline and pyrimidine derivatives from 3-(3,4-dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone. Eur. J. Chem. 2014, 5(1), 85-90. doi:10.5155/eurjchem.5.1.85-90.789
Khan, S., Asiri, A., Kumar, S., & Sharma, K. (2014). Green synthesis, antibacterial activity and computational study of pyrazoline and pyrimidine derivatives from 3-(3,4-dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone. European Journal of Chemistry, 5(1), 85-90. doi:10.5155/eurjchem.5.1.85-90.789
Khan, Salman, Abdullah Mohamed Asiri, Sanjay Kumar, & Kamlesh Sharma. "Green synthesis, antibacterial activity and computational study of pyrazoline and pyrimidine derivatives from 3-(3,4-dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone." European Journal of Chemistry [Online], 5.1 (2014): 85-90. Web. 30 May. 2023
Khan, Salman, Asiri, Abdullah, Kumar, Sanjay, AND Sharma, Kamlesh. "Green synthesis, antibacterial activity and computational study of pyrazoline and pyrimidine derivatives from 3-(3,4-dimethoxy-phenyl-1-(2,5-dimethyl-thiophen-3-yl)-propenone" European Journal of Chemistry [Online], Volume 5 Number 1 (31 March 2014)

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