Methanol → 4,6-Dimethoxypyrimidine-5-carbaldehyde

反応式

Cl[C:2]1[C:7]([CH:8]=[O:9])=[C:6](Cl)[N:5]=[CH:4][N:3]=1.[CH3:11][O-:12].[Na+].[CH3:14][OH:15]>>[CH3:11][O:12][C:2]1[C:7]([CH:8]=[O:9])=[C:6]([O:15][CH3:14])[N:5]=[CH:4][N:3]=1

参加物

反応物 3

HCID 887Methanol

HCID 8196914,6-Dichloro-5-pyrimidinecarbaldehyde

HCID 10942334Sodium Methoxide

生成物 1

HCID 44366454,6-Dimethoxypyrimidine-5-carbaldehyde収率 20%

実験手順

43.6 g (246 mmol) of 4,6-dichloropyrimidine-5-carboaldehyde was dissolved in 200 ml of methanol, and 120 g (622 mmol) of 28% sodium methoxide was added under cooling with ice and then reacted for 2 hours at room temperature. After completion of the reaction, the solvent was distilled off, and an aqueous citric acid solution was added, followed by extraction with ethyl acetate. The organic layer was washed with an aqueous sodium hydrogencarbonate solution, an aqueous citric acid solution, water and an aqueous sodium chloride solution in this order, dried and concentrated, and the obtained crude crystals were washed with isopropyl ether to obtain 8.3 g (yield: 20%) of 4,6-dimethoxypyrimidine-5-carboaldehyde.