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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 2174-2184 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Carbene Reactions, III. Addition of Dimethoxycarbene to Isocyanates and IsothiocyanatesDimethoxycarbene (1) adds to aryl isocyanates to form 5,5-dimethoxyhydantoins (6) and to aryl isothiocyanates to form 5,5-dimethoxydithiohydantolns (11). Competition experiments using p-tolyl isocydnate/phenyl isothiocyanate showed that 1 reacted 11 times faster with the former irrespective of its mode of generation from either 2 or from trimethyl orthoformate (12).
    Notes: Dimethoxycarben (1) addiert sich an Arylisocyanate zu 5,5-Dimethoxyhydantoinen (6) und an Arylsenföle zu 5,5-Dimethoxydithiohydantoinen (11). Konkurrenzversuche im System p-Tolylisocyanat/Phenylsenföl zeigten, daß 1 11 mal rascher mit p-Tolylkocyanat reagiert, unabhägig davon, ob es durch Thermolyse von 2 oder durch Methanol-Abspaltung aus Orthoameisensäureester 12 freigesetzt wurde.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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