反应详情

温度

50 °C

Methyl Iodide (3.83 g, 27.04 mmol) was added to a solution of 5-Bromo-3-chloro-2-hydroxy-benzoic acid (1.7 g, 6.76 mmol) and Cs2CO3 (4.83 g, 14.86 mmol) in DMF (10 mL) and heated at 50° C. for 12 h. The reaction mixture was diluted with EtOAc (30 mL) and filtered over celite pad. Filtrate was washed with water, brine and dried over Na2SO4. Solvent was removed and the residue was purified by silicagel column chromagography to get pure 5-Bromo-3-chloro-2-methoxy-benzoic acid methyl ester (1.56 g)

1. filtrationfiltered over celite pad
2. washFiltrate was washed with water, brine
3. dry with materialdried over Na2SO4
4. customSolvent was removed
5. customthe residue was purified by silicagel column chromagography