Hydrochloric Acid → HCID 126684725, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-bromothiophene-2-carbaldehyde (0.12 mL, 1.0 mmol) and 4-trifluoromethylphenol (195 mg, 1.20 mmol) in 3 mL dimethylformamide was added potassium carbonate (276 mg, 2.00 mmol). The resulting suspension was stirred at 100° C. for 68 h before being cooled to room temperature and poured into 20 mL 0.2 N hydrochloric acid. Organics were extracted with ether (3×25 mL), washed with 2 N NaOH (2×30 mL), 0.2 N hydrochloric acid and brine (30 mL each), dried over magnesium sulfate, filtered and concentrated. The crude residue was subjected to chromatography on silica gel with gradient elution (5-10% ethyl acetate in hexanes+2% triethylamine) to give 5-(4-(trifluoromethyl)phenoxy)thiophene-2-carbaldehyde (79 mg, 29%) as an off-white solid. Used without further characterization.

Provenance & Evidence