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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 1719-1730 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Enehydrazines, 24. Pyrazolidines from Cycloadditions with the Azomethine Imine of Dimethyl 2-(1-Methylhydrazino)-maleateThe azomethine imine 2 which is formed base-catalyzed from the title compound 1 can be trapped by dipolarophiles. Thus dimethyl fumarate gives the pyrazolidines 4a und b, dimethyl maleate additionally 4c and d. The stereochemistry of the adducts is elucidated by chemical reactions, NMR spectra and  -  in the case of 4b  -  crystal structure analysis. Acrylonitrile and fumaronitrile behave similarly.
    Notes: Das aus der Titelverbindung 1 basenkatalysiert gebildete Azomethin-imin 2 kann durch Dipolarophile abgefangen werden. So gibt Fumarsäure-dimethylester die Pyrazolidine 4a und b, Maleinsäure-dimethylester daneben auch 4c und d. Die Stereochemie der Addukte wird durch chemische Reaktionen, NMR-Spektren und  -  im Falle von 4b  -  Kristallstrukturanalyse aufgeklärt. Acrylonitril und Fumaronitril verhalten sich ähnlich.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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