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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Mechanism of Acetalization Reactions with Carboxamide-Dialkyl Sulfate Adducts; a New Method of Preparation of Orthocarboxylic Esters and of Cleavage of CarboxamidesIt is shown that the efficiency of carboxamide-dialkyl sulfate adducts in acetalization reactions depends on their alkylation ability. A mechanism of acetal formation using orthoformates as acetalization reagents is proposed. Alcoholysis of carboxamide-dialkyl sulfate adducts 1b, 11, 13 affords orthocarboxylic esters. Carboxamides and carboxmorpholides react with dimethyl sulfate/methanol to give methyl esters.
    Notes: Es wird gezeigt, daß die acetalisierende Wirkung von Säureamid-Dialkylsulfat-Addukten auf ihrem Alkylierungsvermögen beruht. Ein Mechanismus für die Acetalbildung bei Verwendung von Orthoameisensäureestern als acetalisierender Komponente wird vorgeschlagen. Die Alkoholyse von Säureamid-Dialkylsulfat-Addukten 1b, 11, 13 liefert Orthocarbonsäureester. Säureamide und Säuremorpholide können mit Dimethylsulfat/Methanol in Methylester übergeführt werden.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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