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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 389 (1972), S. 119-128 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1-Aminoalkane-1,1-diphosphonic acids 1, 2 or 3 are formed in the reaction of carboxylic acid amide dihalides or carboxylic acid amide hydrohalogenides with phosphorous acid. Phosphorus trihalides plus water may be used in lieu of phosphorous acid in the reaction with carboxylic acid amides. With formamide either aminomethanediphosphonic acid (1a) or 2-oxo-2-hydroxy-5-amino-1,4,2-oxazaphospholidine-3-phosphonic acid (5) are obtained depending on the reaction conditions.
    Notes: Durch Umsetzung von Carbonsäureamiddihalogeniden oder Carbonsäureamidhydrohalogeniden mit phosphoriger Säure bzw. von Carbonsäureamiden mit Phosphortrihalogenid/Wasser entstehen die 1-Aminoalkan-1, 1-diphosphonsäuren 1, 2 oder 3. Aus Formamid bildet sich je nach Reaktionsbedingung entweder Aminomethandiphosphonsäure (la) oder 2-Oxo-2-hydroxy-5-amino-1,4,2-oxazaphospholidin-3-phosphonsäure (5).
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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