Methyl iodide → Pyridine, 3-bromo-2-methoxy-6-(methoxymethyl)-
反応式
[Br:1][C:2]1[C:3]([O:10][CH3:11])=[N:4][C:5]([CH2:8][OH:9])=[CH:6][CH:7]=1.[CH3:12]I>C1COCC1>[Br:1][C:2]1[C:3]([O:10][CH3:11])=[N:4][C:5]([CH2:8][O:9][CH3:12])=[CH:6][CH:7]=1参加物
4
反応条件
- 温度
- 0 °C
実験手順
step 1—A NaH dispersion (226 mg, 5.64 mmol, 60% mineral oil dispersion) was triturated with hexanes (3×10 mL) and dried under a stream of N2 then suspended in THF (23.5 mL) and cooled to 0° C. A solution of 3-bromo-2-methoxy-6-(hydroxymethyl)pyridine (0.88 g, 3.79 mmol) in THF (10 mL) was added drop-wise and the mixture was stirred for 30 min. To the solution was added MeI (1.00 g, 441 μl, 7.05 mmol) and the mixture was warmed to RT. After 1 h the crude reaction mixture was concentrated in vacuo and the mixture was poured into H2O (100 mL) and extracted with EtOAc (3×50 mL). The combined extracts were washed sequentially with H2O, brine, dried, filtered and concentrated to afford 3-bromo-2-methoxy-6-methoxymethyl-pyridine (136) as a light yellow oil.