Hydrochloric Acid → 3-Bicyclo[2.2.1]hept-7-yl-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid

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Reaction Conditions

Reaction Steps

In a flask was placed 3-bicyclo[2.2.1]hept-7-yl-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid methyl ester (35 mg, 0.089 mmol) in tetrahydrofuran (2 mL). To this mixture at 25° C. was added a solution of lithium hydroxide monohydrate (8 mg, 0.18 mmol) in water (2 mL) and stirred for 1.5 h at 25° C. The mixture was treated with a 1N aqueous hydrochloric acid solution to pH=2 and was extracted with ethyl acetate (3×20 mL). The combined organic layers were dried over magnesium sulfate, filtered and concentrated in vacuo to afford 3-bicyclo[2.2.1]hept-7-yl-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-propionic acid (32 mg, 97%) as a white solid.

Provenance & Evidence