Butyl 4-aminobenzoate → Ethyl 1,6-dihydro-2-(4-butoxycarbonylanilino)-6-oxo-5-pyrimidinecarboxylate
Reaktionsgleichung
CS[C:3]1[NH:4][C:5](=[O:14])[C:6]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:7][N:8]=1.[CH2:15]([O:19][C:20](=[O:28])[C:21]1[CH:26]=[CH:25][C:24]([NH2:27])=[CH:23][CH:22]=1)[CH2:16][CH2:17][CH3:18]>C(O)C>[CH2:15]([O:19][C:20]([C:21]1[CH:22]=[CH:23][C:24]([NH:27][C:3]2[NH:4][C:5](=[O:14])[C:6]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:7][N:8]=2)=[CH:25][CH:26]=1)=[O:28])[CH2:16][CH2:17][CH3:18]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Ethyl 1,6-dihydro-2-methylthio-6-oxo-5-pyrimidinecarboxylate (10 g) and butyl -4-aminobenzoate (10.8 g) are added to ethanol (100 ml), and the mixture is refluxed with stirring for 48 hours. After cooling, the precipitate is collected by filtration and recrystallized from a mixture of DMF and water to give ethyl 1,6-dihydro-2-(4-butoxycarbonylanilino)-6-oxo-5-pyrimidinecarboxylate (7.0 g). M.p. 281°-283° C.