Hydrochloric Acid → {3-[2-(4-Chlorobenzenesulfonyl)pyridin-3-ylmethyl]-5-fluoro-2-methylindol-1-yl}acetic acid

Participants

Reaction Conditions

Reaction Steps

A mixture of {3-[2-(4-chlorobenzenesulfonyl)pyridin-3-ylmethyl]-5-fluoro-2-methylindol-1-yl}acetic acid methyl ester (0.19 g) and tetrahydrofuran (1.5 mL) was treated with 5.0 M aqueous sodium hydroxide solution (2.0 mL), and the resulting mixture was stirred at 40° C. for 3 hours. The mixture was acidified by the addition of 5.0 M aqueous hydrochloric acid solution and concentrated under reduced pressure. The residue was purified by preparative reverse-phase HPLC, eluting with a mixture of acetonitrile and water (3.5:6.5 to 9:1 by volume) to afford the title compound as a white solid (0.039 g).

Provenance & Evidence