3-(Trifluoromethyl)aniline → HCID 67312238, compound

Participants

Reaction Steps

To a solution of 3-({2-[(cyclopropylcarbonyl)amino]-1,3-benzooxazol-6-yl}oxy)benzoic acid (221 mg, 653 μmol) produced in Example B1(vi) in pyridine (5 mL) were added 3-(trifluoromethyl)aniline (298 mg, 1.85 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (328 mg, 1.71 mmol) and N,N-dimethylpyridine-4-amine (21.6 mmol, 177 μmol), and the mixture was stirred at room temperature for 14 hr. The mixture was concentrated under reduced pressure, and the obtained residue was dissolved in methanol (1 mL) and ethyl acetate (50 mL). This solution was washed with 0.1N hydrochloric acid (50 mL), saturated aqueous sodium hydrogencarbonate solution (50 mL) and saturated brine (50 mL), successively, and dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the filtrate was concentrated. The residue was purified by silica gel column chromatography (ethyl acetate/hexane=2/98→80/20), and triturated with diisopropyl ether to give the title compound (57.3 mg, 18%) as a pale-brown solid.

Provenance & Evidence