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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 763 (1972), S. 184-197 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Contribution to the Mechanism of the Polonovski Reaction.N,N-Dimethyl-mesidine-N-oxide (1b) reacts with acetic anhydride to N-acetyl-N-methyl-mesidine (8b). N-Mesityl-N-methyl-methyleneimmonium perchlorate (5b) and N,N-diisopropyl-methyleneimmonium perchlorate (5c) react with tetramethylammonium acetate (TMA) in acetic anhydride with formation of 8b or N,N-diisopropylacetamide (8e), respectively. In chloroform/methylene chloride 5b reacts with TMA, depending on the order of addition, to N-formyl-N-methyl-mesidine (19) and N,N-dimethyl-mesidine (18), or to N-mesityl-N-methyl-aminomethyl acetate (6b). Acylating agents convert 5b to the various N-acyl-N-methyl-mesidines. Under the same reaction conditions 8b does not suffer transacylation when treated with the above used acylating agents.
    Notes: N.N-Dimethyl-mesidin-N-oxid (1b) reagiert mit Acetanhydrid zu N-Acetyl-N-methyl-mesidin (8b). N-Mesityl-N-methyl-methylenimmoniumperchlorat (5b) und N.N-Diisopropyl-methylen-immoniumperchlorat (5c) reagieren mit Tetramethylammoniumacetat (TMA) in Acetanhydrid zu 8b bzw. N.N-Diisopropyl-acetamid (8e). 5b setzt sich mit TMA in Chloroform/Methylenchlorid je nach Zugabefolge einmal zu N-Formyl-N-methyl-mesidin (19) und N.N-Dimethyl-mesidin (18) und zum anderen zu N-Mesityl-N-methyl-aminomethyl-acetat (6b) um. 6b reagiert mit Acylierungsmitteln zu den verschiedenen N-Acyl-N-methyl-mesidinen. 8b erleidet unter den gleichen Reaktionsbedingungen mit den eingesetzten Acylierungsmitteln keine Umacylierung.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1977 (1977), S. 33-39 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Methyleneammonium Salts, IV.  -  Esters of AminomethanolsEsters of aminomethanols were prepared by the reaction of N-mesityl-N-(methyl)methyleneammonium perchlorate (1) with tetramethylammonium carboxylates. The influence of the acyl group on the properties of the esters of aminomethanols was studied.
    Notes: Ester von Aminomethanolen wurden durch Umsetzung von N-Mesityl-N-(methyl)methylenammoniumperchlorat (1) mit Tetramethylammoniumcarboxylaten hergestellt. Es wurde der Einfluß des Carbonsäurerestes auf die Eigenschaften der Ester von Aminomethanolen untersucht.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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