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  • Analytical Chemistry and Spectroscopy  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 12 (1979), S. 284-288 
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Carbon-13 chemical shifts and 13C-1H coupling constants of 3-substituted 4-hydroxycoumarins and 4-hydroxy-7-methoxycoumarins are determined. A three-parameter correlation with F and R of Swain and Lupton and Q of Schaefer applied to these compounds provides linear relationships for the prediction of chemical shifts from substituent parameters.
    Notes: Les déplacements chimiques du 13C et les constantes de couplage 13C-1H d'hydroxy-4 coumarines et d'hydroxy-4 méthoxy-7 coumarines substituées en 3 sont déterminés. Une corrélation à 3 paramètres: F et R de Swain et Lupton et Q de Schaefer appliquée à ces deux séries établit les relations linéaires qui permettent de prévoir les déplacements chimiques à partir des paramètres des substituants.
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
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