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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 1081-1087 
    ISSN: 0009-2940
    Keywords: Carbonyl ylides ; Furans ; Intramolecular cycloadditions ; Isomünchnones ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Intramolekulare Cycloadditionen von mesoionischen Carbonylyliden mit Alkinen. Synthese von 5,6-Dihydro-4H-cyclopenta- und 4,5,6,7-Tetrahydrobenzo[b]furan-DerivatenIntramolekulare Cycloadditionen von acetylenischen Isomünchnonen, die in situ durch Rhodiumacetat-katalysierte Zersetzung von N-(Diazoacetyl)-N-methylalkinamid-Derivaten 16a-c, 18c und 18d erzeugt wurden, sind untersucht worden. Die Primäraddukte fragmentieren unter den Reaktionsbedingungen (110°C) zu den anellierten Furanen 19a-c, 20c und 20d.
    Notes: Intramolecular cycloaddition reactions of acetylenic isomünchnones, formed in situ by rhodium acetate catalyzed decomposition of N-(diazoacetyl)-N-methylalkynamide derivatives 16a-c, 18c, and 18d have been studied. The intermediate cycloadducts fragmentate spontaneously under the reaction conditions (110°C) to afford the annulated furans 19a-c, 20c, and 20d.
    Type of Medium: Electronic Resource
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