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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2216-2227 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses with Enamines, XIX. On the Influence of Various Factors on the Reaction of Cyclic Enamines with KetenesCyclic enamines 1 are acylated by acetyl chloride directly to 5. In the presence of tert. aliphatic amines 6 is first formed and reacts  -  depending on the ring size of the enamine, the amino group, and the solvent  -  to 5 and/or 4. The cycloadducts 4 (n = 6-9) isomerize to 5 while the larger ring adducts 4 (n = 9-13) isomerize to 7.5 and 7 are obtained as their hydrolysis products 8 and 11. All known factors, which influence the acylation of enamines, are documented.
    Notes: Cyclische Enamine 1 werden von Acetylchlorid direkt zu 5 acyliert, in Gegenwart von tert. aliphatischen Aminen entsteht zunächst der Dipol 6, der in Abhängigkeit von der Ringgröße des Enamins, des Aminrestes sowie des Solvens zu 5 und/oder 4 reagiert. Die Cycloaddukte 4 (n = 6-9) isomerisieren zu 5, die größeren Ringe 4 (n = 9-13) dagegen zu 7 unter Ringerweiterung. 5 und 7 werden über ihre Hydrolyseprodukte 8 und 11 erfaßt. Alle bekannten Faktoren, welche die Acylierung von Enaminen beeinflussen, werden zusammengestellt.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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