title: [Synthesis of croconic acid amides. 3. Polycarbonyl compounds].
mesh_terms: D000588:Amines / Q000138:chemical synthesis*; D003517:Cyclopentanes / Q000138:chemical synthesis*; D007659:Ketones / Q000138:chemical synthesis; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000588:Amines; D003517:Cyclopentanes; D007659:Ketones
vernacular_title: Synthese von Krokonsäureamiden. 3. Uber Polycarbonylverbindungen.