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  • 1
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ullmann Reactions of ortho-(Acylamino)halogenoarenesortho-(Acylamino)halogenoarenes 1 and 3 are condensed in presence of metallic copper under mild conditions to give symmetrical biaryl compounds 2 and 4 in good yields. In principle the synthesis of unsymmetrical biaryl compounds is also possible. The acylamino group probably participates directly by forming an organic copper intermediate.
    Notes: ortho-(Acylamino)halogenaromaten 1 und 3 können ohne Aktivierung durch Elektronenakzeptor-Substituenten mit metallischem Kupfer unter milden Bedingungen in guten Ausbeuten zu symmetrischen Biarylverbindungen 2 und 4 kondensiert werden. Grundsätzlich ist auch die Synthese unsymmetrischer Biarylverbindungen möglich. Vermutlich greift die Acylaminogruppe direkt unter Bildung einer intermediären organischen Kupferverbindung in den Reaktionsablauf ein.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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