反应详情

温度

-78 °C

To a stirred solution of LDA (62 mmol) in THF (100 mL) was added 4-bromo-2-fluoro-1-methoxybenzene (12 g, 59 mmol) in THF (20 mL) slowly at −78° C. The reaction mixture was left to stir at −78° C. for 2 h, treated with DMF (15 g, 210 mmol) in THF (20 mL) slowly, left to stir at −78° C. for 1 h, and allowed to warm to room temperature as the bath did. The reaction mixture was treated with water and extracted with EtOAc (×3). The combined organics were washed with brine, dried (Na2SO4), concentrated, and purified by flash chromatography to afford the title compound. 1H NMR (600 MHz, CDCl3) δ 10.34 (s, 1H); 7.39 (dd, 1H); 7.04 (t, 1H); 3.92 (s, 3H).

1. waitThe reaction mixture was left
2. waitleft
3. stirringto stir at −78° C. for 1 h
4. temperatureto warm to room temperature as the bath
5. extractionextracted with EtOAc (×3)
6. washThe combined organics were washed with brine
7. dry with materialdried (Na2SO4)
8. concentrationconcentrated
9. custompurified by flash chromatography