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- W1963989249 abstract "Das durch Phosgenierung aus α-Amino-γ-thiolbutyrolacton (1) entstehende α-Isocyanato-γ-thiolbutyrolacton (2) reagiert mit Alkoholen, Aminen und Hydrazinen zu Urethanen (3a – c), Harnstoffen (4a – c) bzw. Semicarbaziden (5a – c). Durch Säurekatalyse oder thermische Behandlung bilden 4a – c und 5a – c unter öffnung des Lacton-Rings die Hydantoine 6a – d bzw. die as-Triazine 9a – c. Die Strukturen der Verbindungen werden durch NMR- und IR-Spektren bewiesen. Heterocyclic Compounds from Lactones, Lactams and Thiollactones, XII. – Synthesis of α-Isocyanato-γ-thiolbutyrolactone and of Functional Derivatives and their Rearrangement to Hydantoins and 1,2,4-Triazines α-Isocyanato-γ-thiolbutyrolactone (2), formed by phosgenation of α-amino-γ-thiolbutyrolactone (1), gives with alcohols, amines and hydrazines, urethanes (3a – c), ureas (4a – c) and semicarbazides (5a – c), respectively. By acid catalysis or thermic treatment, the lactone ring of 4a – c and 5a – c is opened, leading to the hydantoins 6a – d or the as-triazines 9a – c. The structures of the compounds are confirmed by their NMR- and IR-spectra." @default.
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- W1963989249 date "1972-07-12" @default.
- W1963989249 modified "2023-10-18" @default.
- W1963989249 title "Heterocyclen aus Lactonen, Lactamen und Thiollactonen, XII Synthese von α-Isocyanato-γ-thiolbutyrolacton und funktionellen Derivaten sowie deren Umlagerung in Hydantoine und 1.2.4-Triazine" @default.
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- W1963989249 doi "https://doi.org/10.1002/jlac.19727580119" @default.
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