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- W2080852697 abstract "Eine Anzahl neuer β-Aminocrotonsäure- und -zimtsäureamide (3), meist mit 2-Cyan-, -Keto- oder -Estergruppen, wurde durch Addition von entsprechenden sekundären Enaminen 1 und Isocyanaten hergestellt. Im Fall von tert-Butylisocyanat bewährte sich hierbei die Katalyse mit Zinkchlorid. Einige Verbindungen 3 erhielt man aus β-Ketocarbonamiden 2 mit sekundären Aminen. – Die Tautomerie von 2 und die Konformationen der in Lösung meist einheitlichen Verbindungen 3 wurden aus den Spektren abgeleitet (Typen A, B, C). Imidoylketene Imines, III. Preparation and Conformation of Vinylogous Ureas A number of new β-aminocroton- and cinnamamides (3), often with 2-cyano, -keto, or -ester groups, were prepared by addition of the corresponding secondary enamines 1 to isocyanates. In the case of tert-butyl isocyanate the use of zinc chloride was helpful. Some compounds 3 resulted from β-ketocarboxamides 2 and amines. – From the spectra the tautomerism of 2 and the conformations of the compounds 3, which were mostly uniform in solution, were elucidated (type A, B, C)." @default.
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- W2080852697 date "1980-07-01" @default.
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- W2080852697 title "Über Imidoylketenimine, III. Herstellung und Konformation von vinylogen Harnstoffen" @default.
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- W2080852697 doi "https://doi.org/10.1002/cber.19801130716" @default.
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