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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1456-1464 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Applications of Phase Transfer Catalysis, 11.  -  Phase Transfer Catalytical Conversions of Heterocycles with DihalocarbenesThe conversion of indoles 1 with chlorofluorocarbene yields the products 2-5. Imidazole and CCl2 give low yields of methylidynetriimidazoles 8 and 13, and 3,5-dimethylpyrazole affords methylidynetripyrazole 14 together with traces of the symmetrical pyrimidine 15. Better yields of CCl2, CBr2, and CClF adducts and of products derived therefrom are obtained with 2,5- and 2,3-dihydrofuran and 2,3-dihydropyran.
    Notes: Die Umsetzung der Indole 1 mit Chlorfluorcarben liefert die Produkte 2-5. Imidazole und CCl2 geben in geringer Ausbeute die Methylidintriimidazole 8 und 13; 3,5-Dimethylpyrazol führt zum Methylidintripyrazol 14 neben Spuren des symmetrischen Pyrimidins 15. Bessere Ausbeuten an CCl2-, CBr2- und CClF-Addukten und deren Folgeprodukte werden aus 2,5- und 2,3-Dihydrofuran sowie aus 2,3-Dihydropyran erhalten.
    Type of Medium: Electronic Resource
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