Methanol → Methyl 6-Bromohexanoate
反応式
[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([O-:9])=[O:8].[CH3:10]O>>[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([O:9][CH3:10])=[O:8]参加物
3
反応条件
- 温度
- 25 °C
実験手順
To a 2 liter round bottom flask, charge with 99.7 g (0.511 mol) of 6-bromohexanoate (Aldrich Chemi(al Co., Milwaukee, Wis.) and 1 liter of methanol, was bubbled hydrogen chloride gas for 1-2 minutes. The mixture was stirred at 20-30° C. for 18 h and then concentrated via rotary evaporation. The residue was diluted with 500 mL of diethyl ether and washed with 150 mL of de-ionized water, 200 mL of saturated sodium bicarbonate, and then once again with 200 mL of de-ionized water. The organic phase was dried over anhydrous magnesium sulfate, filtered and concentrated via rotary evaporation. The residue was distiled under vacuum to afford 99.6 g of the product (1) as a colorless oil (93%): b.P.=93-96° C. at 3 mm Hg: 1H NMR (d6-DMSO) d 3.57 (3H, s), 3.51 (2H, t), 2.30 (2H, t), 1.78 (2H, pentet) and 1.62-1.28 (4H, mr) ppm.