Sodium Hydroxide → 7-fluoro-benzofuran-4-carboxylic Acid

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-fluoro-benzofuran-4-carboxylic acid ethyl ester (1.54 mmol) and NaOH (2.31 mmol) in MeOH (1.7 mL) and water (1.7 mL) is heated to 55° C. for 90 min. The mixture is concentrated vacuo and made acidic by addition of aq. HCl (1.0 M). The obtained precipitate is filtered off and dried in vacuo to give the desired product. 1H NMR (DMSO-d6): δ=13.19 (bs, 1H); 8.25 (s, 1H); 7.89-7.94 (m, 1H); 7.41 (s, 1H); 7.36 (t, J=9.5 Hz, 1H).

Provenance & Evidence