Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Spectroscopic Studies of Conjugated Uracil $Derivatives^+$

  • Chang Kiu Lee (Department of Chemistry, Kangweon National University) ;
  • Young Hie Kim (Department of Chemistry, Kangweon National University)
  • Published : 1991.04.20
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Abstract

Ultraviolet spectra of 5-and 6-uracilyl compounds which contain conjugated double bonds were obtained and their characteristic phenomena were examined. 5-Formyluracil and 6-methyl-5-formyluracil showed bathochromic shifts which should be expected from a conjugated carbonyl compound. 6-Formyluracil did not show any shift in absorbing wavelength. 5-and 6-uracilylacrylic acid derivatives, on the other hand, showed absorption at similar wavelengths, indicating the presence of a hexatriene chromophore. The ratio of ${\Delta}ν/J$ in nuclear magnetic resonance spectra of those compounds decreased drastically as the acrylic acids or esters were converted into amides.

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