with the anhydride or the lactone, (γbenzylidene-y-butyrolactone), of 4-oxo-5-phenylpentanoic acid or with its amides, and with aangelicalactone and 4-oxopentanoic acid amides, resulted to the corresponding 2-aminopyrrolidin-5ones, the cyclic tautomers of the Schiff bases of γ-keto amides.
过量的
伯胺与酸酐或内酯(γ-亚苄基-
γ-丁内酯)、4-氧代-
5-苯基戊酸或其酰胺,以及与
当归内酯和
4-氧代戊酸酰胺的反应导致相应的 2-aminopyrrolidin-5ones,γ-酮酰胺席夫碱的环状互变异构体。