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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Theoretical and Spectroscopical Investigations of Indigo Dyes, XXII.  -  Preparations of 5,5′-and 6,6′-Dialkylated Indigo DyesThe manifolded applicabilities of indigo dyes are strongly restricted by the low solubility of most of their representatives. We describe in this paper the preparation of a series of dialkylated indigos 1, thioindigos 2, dyes of the cibaviolett-type 3, and of the corresponding vinylogues 4, 5, and 6 by different synthetic methods. Some of the prepared compounds show a remarkable solubility and can be used for spectroscopic measurements even in non-polar solvents.
    Notes: Die vielseitigen Verwendungsmöglichkeiten der Indigoide werden durch die geringe Löslichkeit der meisten Vertreter dieser Farbstoffklasse stark eingeschränkt. Wir berichten hier über die Darstellung einer Reihe dialkylierter Indigos 1, Thioindigos 2, Cibaviolett-Farbstoffe 3 sowie ihrer Vinylogen 4, 5 und 6 auf unterschiedlichen Wegen. Einige der Verbindungen zeigen eine sehr gute Löslichkeit und können in unpolaren Lösungsmitteln für spektroskopische Zwecke genutzt werden.
    Additional Material: 9 Tab.
    Type of Medium: Electronic Resource
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