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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1974 (1974), S. 1522-1530 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses of Bile Pigments, VI1). - Synthesis of Vinyl Substituted Pyrrolinone DerivativesWe have found that vinyl substituted Δ3-pyrrolin-2-ones are easily formed when the vinyl group and carbonyl group are linearly conjugated. Pyrrolinones of this type show an absorption maximum at 235-245 nm. - The vinyl substituted urobilin ester 26 was too unstable to permit full characterization.
    Notes: Wir fanden, daß sich vinylsubstituierte Δ3-Pyrrolin-2-one leicht bilden, wenn die Vinylgruppe in lineare Konjugation zur Carbonylgruppe zu stehen kommt. Diese Pyrrolinone zeigen ein Absorptionsmaximum bei 235 -245 nm. - Der vinylsubstituierte Urobilinester 26 ist so unbeständig, daß eine ausreichende Charakterisierung nicht möglich war.
    Type of Medium: Electronic Resource
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