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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies in the Field of Natural Product Chemistry, 801)  -  Cyclization Reactions and Claisen Rearrangements of 3-O-Substituted 1,3-Dihydroxy-10-methyl-9(10H)-acridinones  -  Synthesis of FuracridoneSelective etherification of the 3-hydroxy group of 1,3-dihydroxy-10-methyl-9(10H)-acridinone (1a) gave the ethers 1c-c. Cyclodehydration of 1c yielded a mixture of furacridone (2) and 3a in a ratio of about 6:1. Claisen rearrangement or cyclization of 1d and 1e in N,N-diethylaniline led to the isomeric mixtures 1i and 1h as well as 4 and 5 in ratios of 5:1 and 6:1, respectively, in favour of the C-4-substitution. By rearrangement of 1e in HMPT the linear 3b has been obtained.
    Notes: Durch selektive Veretherung der 3-Hydroxygruppe des 1,3-Dihydroxy-10-methyl-9(10H)-acridinons (1a) wurden die Ether 1c-e dargestellt. Cyclodehydratisierung von 1c gab ein ca. 6:1-Gemisch von Furacridon (2) und 3a. Claisen-Umlagerung oder Cyclisierung von 1d und 1e in N,N-Diethylanilin führten zu den Isomerengemischen 1i und 1h sowie 4 und 5 im Verhältnis von ca. 5:1 bzw. 6:1 zu Gunsten der C-4-Substitution. Die Umlagerung von 1e in HMPT gab das lineare 3b.
    Type of Medium: Electronic Resource
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