反应详情

温度

64 °C

To a solution of 5-bromo-2-fluorophenylacetic acid (5 g) in MeOH (200 mL) is added concentrated sulfuric acid (2 mL) and the solution is heated at 64° C. for 16 hours. The solution is evaporated in vacuo and the residue is taken up in EtOAc and washed with 10% sodium bicarbonate, brine and dried over sodium sulfate. The solution is filtered and evaporated in vacuo to afford (5-bromo-2-fluoro-phenyl)-acetic acid methyl ester (5.1 g). 1H NMR (300 MHz, CDCl3) □7.3-7.5 (m, 2H); 6.9 (m, 1H); 3.9 (s, 3H).

1. customThe solution is evaporated in vacuo
2. washwashed with 10% sodium bicarbonate, brine
3. dry with materialdried over sodium sulfate
4. filtrationThe solution is filtered
5. customevaporated in vacuo