Hydrochloric Acid → 4-Methoxy-3-(2-phenylethyl)benzo[b]thiophene

Participants

Reaction Steps

A suspension of 2-carboxy-4-methoxy-3-(2-phenylethyl)benzo[b]thiophene (1 g) and a catalytic amount of copper powder in quinoline (15 mL) was stirred at 200° C. for 2 hours. The reaction mixture was cooled to room temperature and poured into 1 mol/L hydrochloric acid, and the resulting mixture was extracted with ethyl acetate. The extract was washed with 1 mol/L hydrochloric acid and water, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=5/1) to give the title compound (0.77 g).

Provenance & Evidence