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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 729 (1969), S. 21-26 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Protonated Methylbenzene Tetrachloroaluminate ComplexesWell defined complexes from methyl substituted benzenes and aligated by proton magnetic resonance (figure 1, table 1). A few of these compounds can be characterized as σ-complexes. Under the conditions used σ-protonation requires a benzene ring with at least three methyl substituents and a 1,3,5-type of substitution. In all other cases complexes are formed, in which π-bonding is likely.
    Notes: Definierte Komplexe aus Methyl-substituierten Benzolen und Aluminiumchlorid/Chlorwasserstoff wurden erhalten und auf ihre NMR-Signale untersucht (Abb. 1, Tab. 1) Nur ein Teil dieser Verbindungen kann als σ-Komplex charakterisiert werden. Unter den angewandten Bedingungen ist für die σ-Protonierung Substitution mit wenigstens drei Methyl-Gruppen in 1.3.5-Stellung erforderlich. In allen anderen Fällen ist π-Komplex-Bildung wahrscheinlich.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 725 (1969), S. 222-225 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Catalytic Production and Mass Spectroscopic Investigation of N-Hydroxyalkyl-N,N-bisarylaminesN,N-Bisarylamines can be reacted with alkylene oxides in the presence of catalytic amounts of Lewis acids to give the corresponding N,N-bisarylaminoalkanols 3 in good yields. The structure of aminoalkanols obtained by reaction with unsymmetrically substituted alkylene oxides is assessed on the basis of the mass spectrum.
    Notes: N.N-Bis-aryl-amine liefern mit Alkylenoxiden bei Gegenwart katalytischer Mengen von LewisSäuren in guten Ausbeuten die entspr. N.N-Bis-aryl-aminoalkanole 3. Die Struktur von Amino alkanolen, die mit unsymmetrisch substituierten Alkylenoxiden gebildet werden, wird massenspektroskopisch festgelegt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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