Hydrochloric Acid → {4-[3-(4-Fluoro-phenylethynyl)-5-(4-methanesulfonyl-benzyloxy)-phenylsulfanyl]-2-methyl-phenoxy}-acetic Acid

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Reaction Steps

{4-[3-(4-Fluoro-phenylethynyl)-5-(4-methanesulfonyl-benzyloxy)-phenylsulfanyl]-2-methyl-phenoxy}-acetic acid ethyl ester (270 mg; 0.46 mmol) was dissolved in ethanol (15 mL), and aqueous 1 N sodium hydroxide (3 mL) was added. The reaction mixture was stirred for 16 h. acidified with 1 N aqueous hydrochloric acid and extracted with ethyl acetate. The organic phase was dried, evaporated to dryness and purified by prep HPLC (method B). Yield: 113 mg (85%). HPLC-MS: m/z: 599.4 (M+Na); Rt: 2.50 min.

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