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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 1655-1665 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mesoionic Six-membered Heterocycles, I.  -  Synthesis of 6-Oxo-6H-1,3-oxazin-3-ium-4-olatesThe synthesis of 6-oxo-6H-1,3-oxazin-3-ium-4-olates (7) from secondary amides and malonyl dichlorides is described. It is deduced from solvolysis experiments that there is not any significant delocalisation of the positive partial charge at C-2; CNDO/2 calculations are in agreement with this assumption.
    Notes: Es wird die Synthese von 6-Oxo-6H-1,3-oxazin-3-ium-4-olaten (7) aus sekundären Säureamiden und Malonyldichloriden beschrieben. Aufgrund von Solvolyseexperimenten ist anzunehmen, daß eine signifikante Delokalisierung der positiven Partialladung an C-2 nicht erfolgt; [CNDO/2]-Rechnungen stützen diese Ansicht.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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