Methyl iodide → 2-Bromo-1,3-dimethoxy-5-(methoxymethyl)benzene

関与物質

反応手順

Sodium hydride (60% in oil; 24.7 g) was added to a solution of (4-bromo-3,5-dimethoxyphenyl)methanol (118.8 g) in N,N-dimethylformamide (960 mL) while cooling with ice, and after stirring for 10 minutes, iodomethane (41.7 mL) was added dropwise, the temperature was increased to room temperature and stirring was continued for 1 hour. The obtained reaction mixture was poured into ice water (2.5 L), extraction was performed with ethyl acetate, the extract was washed with brine and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography and the title compound (121.3 g) was obtained as a colorless oil from the n-hexane:ethyl acetate (4:1) fraction.

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