反应详情

To a stirred solution of ethyl 2-[2,4-difluoro-3-[[5-(3-fluorophenyl)-2-hydroxy-3-methyl-phenyl]methylamino]phenoxy]acetate (90 mg, 0.20 mmol, 1.0 eq) in THF (3 mL) was added a solution of LiOH (2M aqueous solution, 3 mL, 6 mmol, 30 eq). The reaction was stirred at room temperature for 3 h. Water was added and the mixture acidified to pH 4-5 with diluted HCl then extracted with EtOAc. The combined organic extracts were washed with water and brine, dried and evaporated in vacuo to give the title compound (as a white solid (73 mg, 86%).

1. extractionthen extracted with EtOAc
2. washThe combined organic extracts were washed with water and brine
3. customdried
4. customevaporated in vacuo