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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 1237-1248 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Meerwein Saponification of Alkyl 3-Oxoalkanoates in the Gas ChromatographAlkyl 3-oxoalkanoates decompose by unevitable traces of water in the gas chromatograph to yield the corresponding methyl ketones and alcohols (Meerwein saponification1)). Decomposition occurs in the hot injector (T = 270°C) of the gas chromatograph and also on glass capillary columns (T ≥ 160°C). Decomposition in routine work can be avoided by preparing the corresponding 3-trimethylsilyl enol ethers.
    Notes: 3-Oxoalkansäure-alkylester werden durch Wasserspuren, die sich in der Praxis nicht ausschließen lassen, im Gaschromatographen (GC) zu entsprechenden Methylketonen und alkoholen zersetzt (Meerwein-Verseifung1)). Die Zersetzung erfolgt sowohl im heißen Injektorsystem (T = 270°C) des Gaschromatographen als auch auf Glaskapillarsäulen (T ≥ 160°C). Sie läßt sich durch Überführung in die entsprechenden 3-Trimethylsilylenolether vermeiden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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