Sodium Hydroxide → 2-[2,4-Difluoro-3-[[3-(3-fluorophenyl)-5-hydroxy-phenyl]methylamino]phenoxy]acetic acid

Participants

Reaction Steps

To a solution of ethyl 2-[2,4-difluoro-3-[[3-(3-fluorophenyl)-5-hydroxy-phenyl]methylamino]phenoxy]acetate (II(b)) (200 mg, 0.46 mmol, 1.0 eq) in THF (10 mL) was added NaOH (1M, 6 mL, 6 mmol, 13.0 eq) at 0° C. The reaction mixture was allowed to warm room temperature and was stirred for 3 h. The THF was removed in vacuo and the remaining solution diluted with water and adjusted to pH 4-6 by addition of diluted HCl. The precipitate that formed was collected by filtration and dried in vacuo to give the title compound (I(p)) as a solid (170 mg, 91%).

Provenance & Evidence