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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1977 (1977), S. 1410-1411 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Note on a Simple Route to QuadricyclanoneNorbornadienol (1a) was transformed into quadricyclanol (2a) in 90% yield by direct photocycloaddition. In this way quadricyclanone (3) can be prepared from norbornadiene in a four-step synthesis in 16% yield.
    Notes: Quadricyclanol (2a) kann aus Norbornadienol (1a) durch direkte Photocyclisierung in 90proz. Ausbeute erhalten werden. Dadurch wird Quadricyclanon (3) in einer vierstufigen Synthese aus Norbornadien in 16proz. Ausbeute zugänglich.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Diels-Alder Reactions of o-Benzoquinones with Fulveneso-Benzoquinone (1a) and alkyl-substituted o-benzoquinones 1b-d react with fulvenes 2a-d in a stereoselective and regiospecific cycloaddition to give endo-dicarbonyl compounds 3a-o and 4a, b. Photodecarbonylation and dehydrogenation of these adducts yields benzofulvenes 6, which could be synthesized from indanones 8 by an independent route.
    Notes: o-Benzochinon (1a) und alkylsubstituierte o-Benzochinone 1b-d reagieren mit Fulvenen 2a-d in einer stereoselektiv und regiospezifisch verlaufenden Cycloaddition unter Bildung von endo-Dicarbonylverbindungen 3a-o und 4a, b. Aus diesen sind durch Photodecarbonylierung und Dehydrierung Benzofulvene 6 zugänglich, die auch auf unabhängigem Wege aus Indanonen 8 dargestellt wurden.
    Additional Material: 12 Tab.
    Type of Medium: Electronic Resource
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