Sodium Acetate → Methyl 3-(acetoxymethyl)-4-bromobenzoate
反応式
[Br:1][C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[CH2:12]Br.[C:14]([O-:17])(=[O:16])[CH3:15].[Na+]>CC(O)=O>[C:14]([O:17][CH2:12][C:3]1[CH:4]=[C:5]([CH:10]=[CH:11][C:2]=1[Br:1])[C:6]([O:8][CH3:9])=[O:7])(=[O:16])[CH3:15]参加物
4
反応条件
- 温度
- 100 °C
実験手順
To a solution of methyl 4-bromo-3-(bromomethyl)benzoate (6.5 g; 21 mmol; 1 eq.) in AcOH (32.5 mL) was added sodium acetate (3.46 g; 42 mmol; 2 eq.) and the reaction mixture was stirred at 100° C. for 12 hours. After concentration in vacuo, the residue was partitioned between Ethyl acetate and water. The organic layer was washed with 5% aq. NaHCO3 then brine, dried over MgSO4 and concentrated in vacuo. Purification by column chromatography (c-hexane/ethyl acetate, 5/1) afforded the title compound (4.78 g, 79%) as a white solid.