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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 2867-2871 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Mechanism of the Hydrogen Transfer in the Thermal Disproportionation of HydrazobenzeneThe disproportionation was shown to be of first order in hydrazobenzene with a small hydrogen isotope effect (kH/kD ca. 1.1). This excludes an electrocyclic mechanism and favours the rupture of the N—N bond as the first step of this reaction.
    Notes: Wie das Zeitgesetz (1. Ordnung an Hydrazobenzol) und der niedrige Isotopeneffekt (kH/kD ca. 1.1) zeigen, ist eine synchrone Wasserstoffübertragung zwischen zwei Molekülen Hydrazobenzol ausgeschlossen.  -  Als Mechanismus wird eine primäre N—N-Spaltung in einem Molekül Hydrazobenzol angenommen.
    Additional Material: 1 Tab.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3319-3323 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Mechanism of the Two-Proton-catalysed Semidine RearrangementIntramolecularity of this reaction was shown by a crossing experiment between isotopomeric hydrazobenzenes. A N,C-diprotonated intermediate is proposed.
    Notes: Die unter Zwei-Protonen-Katalyse ablaufende Bildung von o- und p-Semidinen verläuft intramolekular, wie ein Kreuzungsversuch zwischen zwei isotopomeren Hydrazobenzolen zeigte. Eine N, C-diprotonierte Zwischenstufe(1,2) vermag die Befunde zu erklären.
    Additional Material: 1 Tab.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3838-3843 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Intramolecularity of Semidine FormationRearrangement of a mixture of the two isotopomeric 4-methoxyhydrazobenzenes 1 and 2 by one proton-catalysis gives both o- und p-semidines by intramolecular pathways. The consequences to the complex „benzidine rearrangement“ are discussed.
    Notes: Der Kreuzversuch zwischen den isotopomeren 4-Methoxy-hydrazobenzolen 1 und 2 zeigt, daß bei deren Umlagerung unter Ein-Protonen-Katalyse sowohl das o-wie das p-Semidin ausschließlich intramolekular gebildet werden. Die Bedeutung für die Theorie des Komplexes „Benzidin-Umlagerung“ wird diskutiert.
    Additional Material: 1 Tab.
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