Lithium Hydroxide → (2,4-Difluoro-phenoxy)-[4-(piperidine-1-sulfonyl)-phenyl]-acetic acid

Participants

Reaction Conditions

Reaction Steps

(2,4-Difluoro-phenoxy)-[4-(piperidine-1-sulfonyl)-phenyl]-acetic acid ethyl ester (1.3 gm, 2.98 mmol) was dissolved in THF (5 ml) and methanol (0.5 ml). To this was added a solution of lithium hydroxide (0.62 gm, 14.90 mmol) in water (5 ml) and stirred for 18 hours at 25° C. Organic solvents were evaporated from the reaction mixture and aqueous layer was acidified with 1N HCl, precipitated product was filtered off and residue was washed with water. Solid product was dried under vacuum to provide (2,4-difluoro-phenoxy)-[4-(piperidine-1-sulfonyl)-phenyl]-acetic acid (1 gm).

Provenance & Evidence