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- W2008085698 abstract "Durch Drei-Komponenten-Kondensation von Cyclohexylisocyanid mit (CO)5 WC-(OEt)C6H5 und Isocyanaten (RNCO, R = C6H5, CH3, n-C4H9 und t-C4H9) wurden Imidazolidinyliden-Komplexe 4a–d erhalten und aus diesen durch oxidative Zersetzung mit KMnO4/Fe(NO3)3 in hoher Ausbeute die 5-Alkoxyhydantoine 5a–d. Die Reaktion läuft über einen Keteniminkomplex, der sich aus dem Carbenkomplex und dem Isocyanid bildet und in einer 1,3-dipolaren Cycloaddition mit der CN-Bindung des Isocyanates weiterreagiert. Organic Syntheses with Transition Metal Complexes, 131). Hydantoins via Template Condensation of Isocyanides with Carbene Complexes and Isocyanates Imidazolidinylidene complexes 4a–d were obtained by a three-component condensation of cyclohexyl isocyanide with (CO)5WC(OEt)C6H5 and isocyanates (RNCO, R = C6H5, CH3, n-C4H9, t-C4H9). On oxidative decomposition with KMnO4/Fe(NO3)3, 4a–d give 5-alkoxyhydatoins 5a–d in high yield. The reaction involves the intermediate formation of a ketenimine complex from the isocyanide and the carbene complex, which then reacts in a 1,3-dipolar fashion with the CN bond of the isocyanate." @default.
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- W2008085698 date "1986-01-01" @default.
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- W2008085698 title "Organische Synthesen mit Übergangsmetallkomplexen, 13. Hydantoine durch templatgesteuerte Kondensation von Isocyaniden mit Carbenkomplexen und Isocyanaten" @default.
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- W2008085698 doi "https://doi.org/10.1002/cber.19861190115" @default.
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