Acetone → 4-Bromo-2-{[(3,5-dichlorophenyl)amino]methyl}phenol

関与物質

反応手順

3,5-Dichloro-N-(5-bromo-2-hydroxybenzylidene)aniline (1.04 g, 3 mmol) was dissolved in tetrahydrofuran (12 mL) and ethanol (6 mL). Sodium borohydride (113 mg, 3 mmol) was added under ice cooling and argon atmosphere, and the mixture was stirred at room temperature for 12 hours. Acetone (10 mL) was added to the reaction mixture, and the residue obtained by concentration under reduced pressure was added water and extracted with dichloromethane. After the dichloromethane layer was washed with water and brine one after another, dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure. The obtained residue was purified by column chromatography on silica gel (n-hexane:ethyl acetate=4:1) to give a light yellow viscous material. This was crystallized by n-hexane to give the title compound (971 mg, 93.3%) as a white crystal.

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