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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 770-779 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An Unusual Reaction of Dimethyl Acetylenedicarboxylate with Ethyl 2-Amino-3-thiophenecarboxylateEthyl 2-amino-3-thiophenecarboxylate (3) reacts with dimethyl acetylenedicarboxylate to give a multiple component mixture which does not only contain the expected Michael adduct 4 in modest yield, but the cyclo-adducts 5, 6, and 7, too. The structures of these products are determined and the mechanism of their formation is discussed.
    Notes: 2-Amino-3-thiophencarbonsäure-ethylester (3) reagiert mit Acetylendicarbonsäure-dimethylester zu einem Mehrkomponentengemisch, das neben dem erwarteten Michael-Addukt 4 noch die Cycloaddukte 5, 6 und 7 enthält. Die Konstitution dieser Produkte wird ermittelt und ihre Bildung diskutiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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