2024-03-28T14:20:27Z
https://www.eurjchem.com/index.php/eurjchem/oai
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2013-03-30T23:10:27Z
eurjchem:ART
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Synthesis and electronic properties of alkyl- and alkyloxy-curcuminoids
Alsalim, Tahseen Abed Al Qader
Saeed, Bahjat Ali
Elias, Rita Sabah
Abbo, Hanna Sabeeh
Titinchi, Salam Jaber
Turmeric
Tautomerism
Curcuminoids
Electronic transitions
Alkyloxy-curcuminoids
High resolution mass spectra
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.
Atlanta Publishing House LLC
2013-03-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://www.eurjchem.com/index.php/eurjchem/article/view/728
10.5155/eurjchem.4.1.70-73.728
European Journal of Chemistry; Vol. 4 No. 1 (2013): March 2013; 70-73
2153-2257
2153-2249
eng
https://www.eurjchem.com/index.php/eurjchem/article/view/728/PDF