European Journal of Chemistry 2018, 9(1), 30-38 | doi: | Get rights and content

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Synthesis and DFT study of novel pyrazole, thiophene, 1,3-thiazole and 1,3,4-thiadiazole derivatives

Asmaa Mahmoud Fahim (1,*) orcid , Ahmad Mahmoud Farag (2) orcid , Mohamed Rabie Shaaban (3) , Eman Ali Ragab (4)

(1) Department of Green Chemistry, National Research Center, Dokki, P.O. Box. 12622, Cairo, Egypt
(2) Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
(3) Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah Almukkarramah, 21955, Kingdom of Saudi Arabia
(4) Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
(*) Corresponding Author

Received: 23 Nov 2017 | Revised: 22 Dec 2017 | Accepted: 29 Dec 2017 | Published: 31 Mar 2018 | Issue Date: March 2018


Regioselective facile synthesis of innovative heterocycles from the reaction of 2-cyano-N-cyclohexylacetamide (3) with hydrazonoyl chloride (4) in basic condition afforded amino pyrazole derivative 6. The behavior of acetamide 3 with phenylisothiocyanate in DMF/KOH surveyed by addition of the α-halo ketones to yeild the corresponding thiophene derivative 13a, 13b, 16, 18 and 1,3-thiazoles 21. Reaction of intermediate potassium salt 9 with hydrazonoyl chloride 22a-e furnished the corresponding 1,2,4-thiadiazoles 24a-e. Density functional theory (DFT) calculations at the B3LYP and HF techniques combined with 6-31G(d) basis set to investigate the equilibrium geometry of the innovative compound pyrazoles 6 and the stability affording of HOMO/LUMO molecular orbitals.


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European Journal of Chemistry


Pyrazoles; Thiophene; 1,3-Thiazoles; DFT calculation; 1,3,4-Thiadiazole; Cyclohexylacetamide

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DOI: 10.5155/eurjchem.9.1.30-38.1675

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National Research Centre Egypt and Department of Chemistry, Cairo University, Egypt.



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How to cite

Fahim, A.; Farag, A.; Shaaban, M.; Ragab, E. Eur. J. Chem. 2018, 9(1), 30-38. doi:10.5155/eurjchem.9.1.30-38.1675
Fahim, A.; Farag, A.; Shaaban, M.; Ragab, E. Synthesis and DFT study of novel pyrazole, thiophene, 1,3-thiazole and 1,3,4-thiadiazole derivatives. Eur. J. Chem. 2018, 9(1), 30-38. doi:10.5155/eurjchem.9.1.30-38.1675
Fahim, A., Farag, A., Shaaban, M., & Ragab, E. (2018). Synthesis and DFT study of novel pyrazole, thiophene, 1,3-thiazole and 1,3,4-thiadiazole derivatives. European Journal of Chemistry, 9(1), 30-38. doi:10.5155/eurjchem.9.1.30-38.1675
Fahim, Asmaa, Ahmad Mahmoud Farag, Mohamed Rabie Shaaban, & Eman Ali Ragab. "Synthesis and DFT study of novel pyrazole, thiophene, 1,3-thiazole and 1,3,4-thiadiazole derivatives." European Journal of Chemistry [Online], 9.1 (2018): 30-38. Web. 6 Jul. 2022
Fahim, Asmaa, Farag, Ahmad, Shaaban, Mohamed, AND Ragab, Eman. "Synthesis and DFT study of novel pyrazole, thiophene, 1,3-thiazole and 1,3,4-thiadiazole derivatives" European Journal of Chemistry [Online], Volume 9 Number 1 (31 March 2018)

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