1,2-Dimethoxyethane → 5-(3,5-Dimethylisoxazol-4-yl)-2-methylfuran-3-carbaldehyde

関与物質

反応手順

A mixture of 5-bromo-2-methylfuran-3-carbaldehyde (1.9 g), 3,5-dimethylisoxazole-4-boronic acid (1.7 g), tetrakis(triphenylphosphine)palladium(0) (0.6 g), 2N aqueous sodium carbonate solution (9 mL) and 1,2-dimethoxyethane (20 mL) was stirred overnight with refluxing under an argon atmosphere. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (0% ethyl acetate/hexane to 30% ethyl acetate/hexane), and crystallized from ethyl acetate/hexane to give the title compound (1.4 g, 69%) as a yellow crystal.

情報源と証拠