反应详情

Methyl 2-(4-fluoroanilino)-4-methoxybenzoate 2.2 g was added to 1.0 mol/L boron tribromide/dichloromethane 24 mL, and it was stirred at room temperature for 5 hours. Saturated sodium chloride aqueous solution and ethyl acetate were added to the reaction mixture. The organic layer was separated and collected,dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The obtained residue was refined by silica gel column chromatography [Fuji SILYSIA Chemical Ltd., PSQ100B(spherical type), eluent; hexane:ethyl acetate=5:1] to give methyl 2-(4-fluoroanilino)-4-hydroxybenzoate 0.60 g of purple solid.

1. customThe organic layer was separated
2. customthe solvent was removed under reduced pressure