Thionyl Chloride → Methyl 5-cyano-2-methoxybenzoate
反応式
O[N:2]=[CH:3][C:4]1[CH:5]=[CH:6][C:7]([O:14][CH3:15])=[C:8]([CH:13]=1)[C:9]([O:11][CH3:12])=[O:10].S(Cl)(Cl)=O>C(Cl)Cl>[C:3]([C:4]1[CH:5]=[CH:6][C:7]([O:14][CH3:15])=[C:8]([CH:13]=1)[C:9]([O:11][CH3:12])=[O:10])#[N:2]参加物
4
反応条件
- 温度
- 0 °C
実験手順
Methyl 5-((hydroxyimino)methyl)-2-methoxybenzoate (1.04 g, 4.94 mmol) was dissolved in methylene chloride (25 mL) and cooled to 0° C. The reaction was treated with thionyl chloride (0.59 mL, 8.1 mmol) and stirred at 0° C. for 2 h. After warming to room temperature, the reaction was diluted with methylene chloride, washed with saturated sodium bicarbonate (2×), brine (2×), dried over sodium sulfate, and concentrated to afford 0.87 g (92%) which was used without further purification. 1H-NMR (CDCl3, 500 MHz) δ 8.09 (d, J=2.1 Hz, 1H), 7.75 (dd, J=8.9, 2.1 Hz, 1H), 7.05 (d, J=8.9 Hz, 1H), 3.96 (s, 3H), 3.90 (s, 3H). Mass spec.: 192.02 (MH)+.