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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 1723-1736 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Heterocyclic 8π-Systems, 141) Generation and Reactions of Cyanine Dye Leuko compoundsThe symmetric cyanine dyes 2a-c, 3a, 4a, and 5a were transformed into the leuko compounds 7-10, 12, and 14. Deprotonation of 7 and 8 with lithium diisopropylamide led to the corresponding cyanine dye anions, which yielded derivatives of the leuko compounds (25 - 30 and 34, 35, respectively) with electrophiles. The cyanine dyes 2a, 3a and the leuko compounds 7, 8 delivered with lithium tetracyano-p-quinodimethan anion (LiTCNQ) and tetracyano-p-quinodimethan (TCNQ) simple (36, 37), and complex salts (38, 39), respectively. 39 displayed interesting conductivity.
    Notes: Aus den symmetrischen Cyaninfarbstoffen 2a-c, 3a,4a und 5a wurden die Leukoverbindungen 7-10,12 und 14 hergestellt. Durch Deprotonierung von 7 und 8 mit Lithium-diisopropylamid wurden die entsprechenden Cyaninfarbstoff-Anionen erzeugt, welche mit Elektrophilen zu Derivaten der Leukoverbindungen (25-30 bzw. 34, 35) führten. Aus den Cyaninfarbstoffen 2a, 3a und den Leukoverbindungen 7, 8 wurden mit Lithium-[tetracyan-p-chinodimethan-Anion] (LiTCNQ) bzw. Tetracyan-p-chinodimethan (TCNQ) einfache (36, 37) und komplexe Salze (38, 39) erhalten. 39 zeigte interessante Leitfähigkeitseigenschaften.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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