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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 306-318 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Intramoleclar Addition of Carbanions to AnthraquinonesThe intramolecular Michael addition of the carbanions derived from the β-keto diesters 15a and 15b yields the naphthacenequinones 20a and 20b. In contrast, the similar dimethyl ether 11 cyclizes to give the benzo[α]anthracenequinone 17. The hydroquinone of 1,8-dihydroxyanthraquinone (5a) reacts with acrylate to yield the unusual anthrone derivatives 12b and 12c.
    Notes: Die intramolekulare Michael-Addition der Carbanionen, die sich von den β-Ketodiestern 15a und 15b ableiten, liefert die Naphthacenchinone 20a und 20b. Dagegen cyclisiert der Dimethylether 11 zum Benzo[α]anthracenchinon 17. Das Hydrochinon des 1,8-Dihydroxyanthrachinons (5a) reagiert mit Acrylsäureester zu den ungewöhnlichen Anthron-Derivaten 12b und 12c.
    Type of Medium: Electronic Resource
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