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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 2185-2196 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cyclopropylmethyl-, Cyclopropylethyl-, and Cyclopropylisopropylacetylene - Synthesis and Metalation ReactionsMethyl-(1b), ethyl-(1c) substituted cyclopropylacetylenes are prepared in 30-g-scale and metalated with n-buyllithium. With usual trapping reagents a number of new compounds (11 - 38) is produced and the following is shown: 1b is metalated only at the methyl group, 1c both at the methylene group and the cyclopropane ring, 1d exclusively at the cyclopropane ring. Dimetalations are not detectable even under drastic reaction conditions.
    Notes: Methyl-(1b), äthyl-(1c)substituiertes Cyclopropylacetylen werden in 30-g-Maßstab hergestellt und mit n-Butyllithium metalliert. Durch übliche Abfangreagenzien wird eine Vielzahl neuer Verbindungen (11 - 38) erhalten und folgendes gezeigt: 1b wird nur an der Methylgruppe metalliert, 1c sowohl an der Methylengruppe als auch am Cyclopropanring, 1d ausschließlich am Cyclopropanring; zweifache Metallierungen sind selbst unter drastischen Bedingungen nicht nachweisbar.
    Type of Medium: Electronic Resource
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