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  • 1
    ISSN: 1434-4475
    Keywords: Hydrazones ; Nucleophilic substitution reactions ; Kinetics of substitution reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wird die Substitution einer —CH-Gruppe inp-(Tricyanovinyliden)phenylhydrazonen mit Aminen geprüft. Die Reaktionsgeschwindigkeit wird von der Polarität des Lösungsmittels bestimmt; die berechneten Geschwindigkeitskoeffizienten zweiter Ordnungk ber 2 . (Substitution der —CN-Gruppe) nehmen mit der Aminkonzentration zu. Es wird die Röntgenstrukturanalyse eines Adduktes beschrieben.
    Notes: Abstract The dispacement of a —CN group inp-(tricyanovinylidene)-phenylhydrazones, induced by amines, is investigated. The rate of the reaction is dependent on the polarity of the solvent and the observed second-order rate coefficientsk obs 2 for the —CN displacement increase with the amine concentration. A X-ray analysis of one of the substituted compounds is also reported.
    Type of Medium: Electronic Resource
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