Water → HCID 64793275, compound

Participants

Reaction Steps

To a solution of 5-amino-2-methylphenol (7.38 g, 59.9 mmol) in tetrahydrofuran (30 mL) was added water (30 mL) in which sodium hydrogen carbonate (6.00 g, 71.9 mmol) has been suspended, and the mixture was vigorously stirred at room temperature. 3-(Trifluoromethyl)benzoyl chloride (15.0 g, 71.9 mmol) was added dropwise to the mixture under ice-cooling, and the mixture was stirred at room temperature for 24 hr. The aqueous layer of the reaction mixture was separated, and the organic layer was diluted with ethyl acetate, and washed with saturated brine. The organic layer was dried over anhydrous magnesium sulfate, and was filtrated, and the solvent was evaporated under reduced pressure. A mixture of the obtained residue, methanol (30 mL) and 2N aqueous sodium hydroxide solution (30 mL) was stirred at room temperature for 24 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and decolorized with activated carbon. The insoluble material was filtered off through a pad with two layers of silica gel and celite. The solvent was evaporated under reduced pressure, and the obtained solid was washed with a mixed solvent of ethyl acetate and hexane to give the title compound (14.8 g, 84%) as a white powder.

Provenance & Evidence