2-Butenoic acid, 3-amino-, ethyl ester, (2Z)- → Ethyl 5-benzoyl-2,6-dimethyl-4-(2-methyl-4-oxo-4H-chromen-8-yl)-1,4-dihydropyridine-3-carboxylate
反応式
[CH3:1][C:2]1[O:3][C:4]2[C:9]([C:10](=[O:12])[CH:11]=1)=[CH:8][CH:7]=[CH:6][C:5]=2[CH:13]=[C:14]([C:23](=O)[CH3:24])[C:15]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)=[O:16].[NH2:26]/[C:27](/[CH3:34])=[CH:28]\[C:29]([O:31][CH2:32][CH3:33])=[O:30]>C(O)C>[C:15]([C:14]1[CH:13]([C:5]2[CH:6]=[CH:7][CH:8]=[C:9]3[C:4]=2[O:3][C:2]([CH3:1])=[CH:11][C:10]3=[O:12])[C:28]([C:29]([O:31][CH2:32][CH3:33])=[O:30])=[C:27]([CH3:34])[NH:26][C:23]=1[CH3:24])(=[O:16])[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1参加物
4
実験手順
353 mg (1.06 mmol) of 2-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]-1-phenylbutane-1,3-dione are dissolved with 137 mg (1.06 mmol) of ethyl 3-aminocrotonate in 5 ml of ethanol and heated under reflux under argon for 24 h. The reaction solution is purified by preparative HPLC. Concentration of the product fractions and crystallization from ethyl acetate result in 245 mg (52% of theory) of the title compound as a yellow solid.