反应详情

To 3-bromo-5-methoxycarbonyl-benzoic acid (3 g, 11.6 mmol, 1 eq) was added SOCl2 (20 mL) and the reaction heated at reflux overnight. The excess SOCl2 was removed in vacuo and the residue obtained was dissolved in THF (15 mL) and added dropwise to a solution of NH3 (38% aqueous, 30 mL). The precipitate that formed was collected by filtration, washed with water and dried to give the title compound as a white solid (2.8 g, 94%).

1. temperaturethe reaction heated
2. temperatureat reflux overnight
3. customThe excess SOCl2 was removed in vacuo
4. customthe residue obtained
5. customThe precipitate that formed
6. filtrationwas collected by filtration
7. washwashed with water
8. customdried