Hydrochloric Acid → (5-Bromo-2-chlorophenyl)methanol

関与物質

反応手順

25.0 g of methyl 5-bromo-2-chlorobenzoate was dissolved in 130 ml of dichloromethane. To this solution, 230 ml of a 0.96 M DIBAL (diisobutylalminium hydride) hexane solution was added at −40° C. in a nitrogen atmosphere, followed by stirring at room temperature for 4 hours. To this reaction solution, 10% hydrochloric acid was carefully added while cooling, followed by extraction with ethyl acetate and drying over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the obtained crude crystals were washed with hexane to obtain 20.8 g of 5-bromo-2-chlorobenzyl alcohol as white crystals.

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