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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 145-148 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Phosphorylation of N,N-Dimethylurea with POCl3. N,N-Dimethylbiuretophosphate(H3C)2NCONH2 and POCl3 in a molar ratio of 4:1 are allowed to react in liquid SO2. After evaporation of SO2 remains a viscous liquid which crystallizes 8-10 days later. The alkaline hydrolysis of the crystals leads to [(H3C)2NCONHCONHP(O)O2]-, which is precipitated from the cold concentrated solution by gaseous ammonia. The biuret group is produced by the action of primary formed upon (CH3)2NCONH2 in the viscous reaction liquid.
    Notes: (H3C)2NCONH2 wird mit POCl3 im Verhältnis 4:1 in flüssigem SO2 zur Reaktion gebracht. Die nach dem Abdampfen des SO2 verbleibende viskose Lösung kristallisiert nach 8-10 Tagen. Die alkalische Hydrolyse der Kristalle führt zu N,N-Dimethylbiuretophosphat, das aus dem konzentrierten Hydrolysat mit gasförmigem NH3 in der Kälte gefällt wird. Die Biuretgruppe entsteht in der Reaktionslösung über primär gebildetes Phosphorylisocyanat durch Reaktion mit N,N-Dimethylharnstoff.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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