European Journal of Chemistry 2013, 4(1), 70-73 | doi: https://doi.org/10.5155/eurjchem.4.1.70-73.728 | Get rights and content






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Synthesis and electronic properties of alkyl- and alkyloxy-curcuminoids


Tahseen Abed Al Qader Alsalim (1) , Bahjat Ali Saeed (2,*) , Rita Sabah Elias (3) , Hanna Sabeeh Abbo (4) , Salam Jaber Titinchi (5)

(1) Department of Chemistry, College of Education, University of Basrah, Basrah-16001, Iraq
(2) Department of Chemistry, College of Education, University of Basrah, Basrah-16001, Iraq
(3) Department of Pharmaceutical Chemistry, College of Pharmacy, University of Basrah-16001, Basrah, Iraq
(4) Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa
(5) Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa
(*) Corresponding Author

Received: 30 Dec 2012 | Revised: 01 Feb 2013 | Accepted: 02 Feb 2013 | Published: 31 Mar 2013 | Issue Date: March 2013

Abstract


Two series of p-alkyl- and p-alkoxy-substituted curcuminoids were synthesized. The validity of the proposed structures was checked on the basis of their high resolution mass spectra as well as NMR, IR and electronic spectra. The spectra were essentially similar for both series. NMR, IR and electronic spectra showed that the compounds exist mainly or exclusively as the enolic tautomer in their solutions. Theoretical study for the electronic spectra was conducted to account for the origins of the electronic transitions that are responsible for the UV-VIS bands. The theoretical calculations were done at the B3LYP/6-31G(d) level of theory and predicted that the similarity of the electronic spectra is may be due to the close resemblance of their molecular orbitals.

4_1_70_73

Keywords


Turmeric; Tautomerism; Curcuminoids; Electronic transitions; Alkyloxy-curcuminoids; High resolution mass spectra

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DOI: 10.5155/eurjchem.4.1.70-73.728

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[1]. Tahseen Abdul Qader Alsalim, Hussain Ali Mzban, Einas Nasir Abood
Synthesis and antioxidant study of new hydrazones derived from bisdemethoxycurcumin pyrazole
European Journal of Chemistry  8(4), 344, 2017
DOI: 10.5155/eurjchem.8.4.344-348.1630
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How to cite


Alsalim, T.; Saeed, B.; Elias, R.; Abbo, H.; Titinchi, S. Eur. J. Chem. 2013, 4(1), 70-73. doi:10.5155/eurjchem.4.1.70-73.728
Alsalim, T.; Saeed, B.; Elias, R.; Abbo, H.; Titinchi, S. Synthesis and electronic properties of alkyl- and alkyloxy-curcuminoids. Eur. J. Chem. 2013, 4(1), 70-73. doi:10.5155/eurjchem.4.1.70-73.728
Alsalim, T., Saeed, B., Elias, R., Abbo, H., & Titinchi, S. (2013). Synthesis and electronic properties of alkyl- and alkyloxy-curcuminoids. European Journal of Chemistry, 4(1), 70-73. doi:10.5155/eurjchem.4.1.70-73.728
Alsalim, Tahseen, Bahjat Ali Saeed, Rita Sabah Elias, Hanna Sabeeh Abbo, & Salam Jaber Titinchi. "Synthesis and electronic properties of alkyl- and alkyloxy-curcuminoids." European Journal of Chemistry [Online], 4.1 (2013): 70-73. Web. 31 May. 2020
Alsalim, Tahseen, Saeed, Bahjat, Elias, Rita, Abbo, Hanna, AND Titinchi, Salam. "Synthesis and electronic properties of alkyl- and alkyloxy-curcuminoids" European Journal of Chemistry [Online], Volume 4 Number 1 (31 March 2013)

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DOI Link: https://doi.org/10.5155/eurjchem.4.1.70-73.728

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