"4"^^ . "The reaction of aldehydes (pentanal, benzaldehyde, 4-methoxybenzaldehyde, 4-nitrobenzaldehyde, salicylaldehyde, pyridin-2-carbaldehyde) with 1-aminocyclopentancarboxamide or (S)-2-amino-2,3-dimethylbutanamide has been used to prepare substituted imidazolidin-4-ones 1a-g in the yields of 53-83%.Subsequent oxidations with various reagents gave the corresponding 4,5-dihydro-1H-imidazol-5-ones 2a-g: Pd/C (72-93%), DDQ (25-80%), and MnO2 (30-77%). Structure of the prepared compounds 1a-g and 2a-g was verified by 1H NMR and 13C NMR spectroscopy, EI-MS and elemental analysis. X-ray diffraction was performed in the case of compounds 1e and 2e."@en . . . "Oxidation of Substituted Imidazolidin-4-ones: New Alternative Method Preparation of 4,5-Dihydro-1H-imidazol-5-ones"@en . "Z(MSM0021627501)" . "25310" . . . "277866" . "Oxidation of Substituted Imidazolidin-4-ones: New Alternative Method Preparation of 4,5-Dihydro-1H-imidazol-5-ones" . "Journal of Heterocyclic Chemistry" . "5"^^ . "000284740700016" . . . . . "0022-152X" . . "The reaction of aldehydes (pentanal, benzaldehyde, 4-methoxybenzaldehyde, 4-nitrobenzaldehyde, salicylaldehyde, pyridin-2-carbaldehyde) with 1-aminocyclopentancarboxamide or (S)-2-amino-2,3-dimethylbutanamide has been used to prepare substituted imidazolidin-4-ones 1a-g in the yields of 53-83%.Subsequent oxidations with various reagents gave the corresponding 4,5-dihydro-1H-imidazol-5-ones 2a-g: Pd/C (72-93%), DDQ (25-80%), and MnO2 (30-77%). Structure of the prepared compounds 1a-g and 2a-g was verified by 1H NMR and 13C NMR spectroscopy, EI-MS and elemental analysis. X-ray diffraction was performed in the case of compounds 1e and 2e." . "4,5-Dihydro-1H-imidazol-5-ones; Imidazolidin-4-ones; Oxidation"@en . . "Sedl\u00E1k, Milo\u0161" . . . "[7AE3DBC5FDF2]" . "6" . . . "RIV/00216275:25310/10:39881312" . "Panov, Illia" . "Oxidation of Substituted Imidazolidin-4-ones: New Alternative Method Preparation of 4,5-Dihydro-1H-imidazol-5-ones" . "Pad\u011Blkov\u00E1, Zde\u0148ka" . . "Hanusek, Ji\u0159\u00ED" . "RIV/00216275:25310/10:39881312!RIV11-MSM-25310___" . "5"^^ . "Drabina, Pavel" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . . "Oxidation of Substituted Imidazolidin-4-ones: New Alternative Method Preparation of 4,5-Dihydro-1H-imidazol-5-ones"@en . . . "47" .