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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 1271-1284 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stereochemistry of the Thermal and Photochemical Decomposition of Bicyclic Vinyl-1-pyrazolinesThe 1,3-dipolar cycloaddition of diazomethane, diazoethane, and 3-diazo-1-propene to cyclic olefines results in the formation of the bicyclic 1-pyrazolines 8, 11-18, which form upon thermal and photochemical decomposition the hydrocarbons 9, 10, 19-32. The thermal decomposition reactions form mainly products which show inversion of configuration in reference to the starting pyrazolines, whereas the photochemical decompositions result predominantly in products where the stereochemistry of the starting materials is retained. The possibly occurring intermediates are discussed. The properties and further reactions of the resulting products are described.
    Notes: Durch 1,3-dipolare Cycloaddition von Diazomethan, Diazoäthan und 3-Diazo-1-propen an Cyclene entstehen die bicyclischen 1-Pyrazoline 8, 11-18, deren thermischer und photochemischer Zerfall die bicyclischen Kohlenwasserstoffe 9, 10, 19-32 liefert. Die entstandenen Produkte zeigen bei der thermischen Reaktion gegenüber den Ausgangsverbindungen Inversion der Konfiguration, während die Photoreaktion zu Produkten mit überwiegender Retention führt. Die bei den Reaktionen möglicherweise auftretenden Zwischenstufen werden diskutiert und die Folgereaktionen der Zersetzungsprodukte beschrieben.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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