Intermolekulare CC-verknüpfung von azanickelacyclopentanonen, α,ω-disäureamide aus alkenen und phenylisocyanat

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Abstract

The reaction mode of the nickela five-membered ring complexes, prepared from phenyl isocyanate and the alkenes ethene, propene and styrene at (Lig)Ni0 systems, with oxidizing reagents such as FeCl3 and iodine are reported. Depending on the ligands, either unsaturated acid amides are formed or α,ω-diacid amides result by intermolecular CC bond formation. In this way the azanickela seven-membered ring complexes yield linear 1,8-diacid amides.

Zusammenfassung

Das Reaktionsverhalten der aus Phenylisocyanat und den Alkenen Ethen, Propen und Styrol an (Lig)Ni0-Systemen entstehenden Nickela-Fünfringkomplexen gegenüber Oxidationsmitteln wie FeCl3 oder Jod wird aufgeführt. In Abhängigkeit vom Liganden entstehen neben ungesättigten Carbonsäureamiden noch die im Verlauf einer intermolekularen CC-Verknüpfung gebildeten α,ω-Disäureamide. Aus dem Azanickela-Siebenringkomplex lassen sich auf diesem Wege lineare 1,8-Disäureanilide gewinnen.

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