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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 104 (1971), S. 2412-2419 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chloro-, Bromo- and Iodocyclooctatetraene: Preparation and Some ReactionsThe cis-7.8-dihalocycloocta-1.3.5-trienes which are formed by chlorination or bromination of cyclooctatetraene at -60° in dichloromethane, are dehydrohalogenated in situ by potassium tert.-butoxide at -45°; 85% bromo- and 74-83% chlorocyclooctatetraene are obtained. Iodocyclooctatetraene is accessible from cyclooctatetraenyllithium and iodine. Rational procedures for the preparation of methoxy-, phenoxy-, acetoxy-, methyl- and phenylcyclo-octatetraene are described.
    Notes: Die cis-7.8-Dihalogen-cyclooctatriene-(1.3.5), die aus der Chlorierung und Bromierung des Cyclooctatetraens bei -60° in Methylenchlorid hervorgehen, lassen sich in situ mit Kaliumtert-butylat bei -45° dehydrohalogenieren; man erhält 85% Brom- bzw. 74-83% Chlor-cyclooctatetraen. Jod-cyclooctatetraen entsteht aus Cyclooctatetraenyl-lithium und Jod. Rationelle Darstellungen für Methoxy-, Phenoxy-, Acetoxy-, Methyl- und Phenyl-cyclooctatetraen werden angegeben.
    Type of Medium: Electronic Resource
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