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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 12, Number 2
BKCSDE 12(2)
February 20, 1991 

Spectroscopic Studies of Conjugated Uracil Derivatives
Chang Kiu Lee*, Young Hie Kim
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 △ν/J in nuclear magnetic resonance spectra of those compounds decreased drastically as the acrylic acids or esters were converted into amides.
207 - 210
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