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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1986 (1986), S. 1669-1686 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dimeric Naphthoquinones, XIX. - Ammonium Cerium(IV) Nitrate as Oxidising Agent: Synthesis of Dimeric NaphthazarinsDimeric 1-naphthols (type 8 or 10) are easily oxidised using ammonium cerium(IV) nitrate, yielding the quinones of type 9 or 11. By dealkylation of the latter, several potentially naturally occurring binaphthazarin derivatives and the natural products 8′-hydroxy-isodiospyrin (22d) and euclanone were obtained; the structure of the latter was proved to be 23e.
    Notes: Ammonium-cer(IV)-nitrat oxidiert dimere 1-Naphthole vom Typ 8 oder 10 in glatter Reaktion zu den Chinonen 9 oder 11. Aus diesen wurden durch Entalkylierung neben verschiedenen anderen potentiell natürlich vorkommenden dimeren Naphthazarin-Derivaten die Naturstoffe 8′-Hydroxy-isodiospyrin (22d) und Euclanon erhalten; die Struktur des letzteren wird durch die Synthese als 23e festgelegt.
    Type of Medium: Electronic Resource
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