Ethyl Acetate → HCID 136073675, compound

Participants

Reaction Steps

Benzyltrimethylammonium tribromide (3.95 g, 10 mmol) was added portion-wise to an ice cooled suspension of 4-[4-(4-methoxy-phenyl)-3-methyl-isoxazol-5-yl]-benzene-1,3-diol (Example 1) (2.95 g, 10 mmol) in dichloromethane (50 ml) and the mixture stirred for ˜60 mins, at room temperature. Ethyl acetate (300 ml) was added and the mixture washed with water (3×200 ml) and saturated aqueous sodium chloride solution (50 ml). The solution was dried over anhydrous magnesium sulphate and concentrated to give a pale brown solid. Crude product was purified by column chromatography, on silica, eluting with ethyl acetate/hexane (1:2), to give 4-bromo-6-[4-(4-methoxy-phenyl)-3-methyl-isoxazol-5-yl]-benzene-1,3-diol as a white solid, dried in vacuo, (3.42 g)

Provenance & Evidence