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Journal
2010 | 8 | 2 | 347-355
Article title

Structure and spectal properties of cinnamoyl pyrones and their vinylogs

Content
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EN
Abstracts
EN
The 1H-NMR and quantum chemical analysis of the stability of tautomers of cinnamoyl pyrone derivatives and vinylogs has been studied. The relationship between the structure of the most stable tautomer and its spectral properties has been investigated. It has been determined that the tautomer of highest stability (88–100 molar %) has an α-pyrone structure and exhibits a trans-conformation in the cinnamoyl fragment. An intense fluorescence of dyes has been observed in non-polar solvents with cinnamoyl fragments having electron-donating substituents or several double bonds in the polymethine chain. A gradient in solvent polarity resulted in fluorescence quenching which permits the use of the dyes as intensometric fluorometric probes for medium polarity examination. [...]
Publisher

Journal
Year
Volume
8
Issue
2
Pages
347-355
Physical description
Dates
published
1 - 4 - 2010
online
23 - 3 - 2010
Contributors
  • Department of Physical Organic Chemistry, Institute of Chemistry at Kharkov National University, Kharkov, 61077, Ukraine
  • Danilevskii Institute of Endocrine Pathology Problems, Ukrainian Academy of Medical Sciences, Kharkov, 61002, Ukraine
  • Danilevskii Institute of Endocrine Pathology Problems, Ukrainian Academy of Medical Sciences, Kharkov, 61002, Ukraine
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-009-0138-4
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