Potassium Carbonate → 8-Bromo-7-ethoxymethyl-3-methylxanthine
反応式
[Br:1][C:2]1[NH:10][C:9]2[C:8](=[O:11])[NH:7][C:6](=[O:12])[N:5]([CH3:13])[C:4]=2[N:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:20]([O:22][CH2:23]Cl)[CH3:21]>CN(C)C=O>[Br:1][C:2]1[N:10]([CH2:23][O:22][CH2:20][CH3:21])[C:9]2[C:8](=[O:11])[NH:7][C:6](=[O:12])[N:5]([CH3:13])[C:4]=2[N:3]=1参加物
5
実験手順
To a stirring suspension of 8-bromo-3-methylxanthine (7.06 g, 28.8 mmol) and potassium carbonate (3.98 g, 28.8 mmol) in dimethylformamide (DMF) (150 ml) was added chloromethyl ethyl ether (2.72 g, 28.8 mmol). After stirring overnight at room temperature, the reaction mixture was poured into ice-cold water (650 ml). After stirring at 0-5° C. for 1 hour, the solid was filtered, washed with water (3×15 ml) and dried under vacuum to provide 8-bromo-7-ethoxymethyl-3-methylxanthine (6.15 g, 70% yield) as a white solid.