反应详情

Trifluoroacetic acid (1.25 mL, 5 times) was added to a stirred solution of 5-((4-methoxybenzyl)oxy)-3-methyl-2-vinylpyridine (250 mg, 0.00098 mmol) in anisole (0.5 mL). The reaction mixture was stirred for 2 h at ambient temperature. After completion of the reaction, the reaction mixture was concentrated and quenched with saturated NaHCO3 solution (2 ml). The reaction mixture was extracted with ethyl acetate (2×10 mL) and the combined organic layers were washed with brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The crude residue was triturated with pentane to afford 5-methyl-6-vinylpyridin-3-ol as an off white solid (100 mg, 76%). MS m/z=136.15 [M+H]+.

1. customAfter completion of the reaction
2. concentrationthe reaction mixture was concentrated
3. customquenched with saturated NaHCO3 solution (2 ml)
4. extractionThe reaction mixture was extracted with ethyl acetate (2×10 mL)
5. washthe combined organic layers were washed with brine
6. dry with materialdried over anhydrous sodium sulfate
7. concentrationconcentrated under reduced pressure
8. customThe crude residue was triturated with pentane