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Journal

2010 | 8 | 2 | 347-355

Article title

Structure and spectal properties of cinnamoyl pyrones and their vinylogs

Content

Title variants

Languages of publication

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
  • Department of Physical Organic Chemistry, Institute of Chemistry at Kharkov National University, Kharkov, 61077, 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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