反应详情

To a solution of 5-bromopyridin-2(1H)-one (2.01 g, 11.55 mmol) in DMF (30 mL) at 0° C. was added sodium hydride (0.924 g, 23.10 mmol). The reaction mixture was stirred for 1 h at room temperature. To this, (2-(chloromethoxy)ethyl)trimethylsilane (2.89 g, 17.33 mmol) was added slowly. The reaction mixture was stirred overnight. LCMS—0.26 min, MH+ 304.1 (non-polar method). The reaction was quenched with sat. aq. NH4Cl, and then diluted with ethyl acetate. The reaction mixture was extracted with EtOAc. The combined organics were washed with water and brine, then dried over sodium sulfate, filtered off and concentrated in vacuo. The crude product was purified by flash chromatography column using 0-50% EtOAc/heptane. 5-bromo-1-((2-(trimethylsilyl)ethoxy)methyl)pyridin-2(1H)-one was obtained as a yellow viscous liquid. LCMS (m/z): 304/306 (MH+), 0.95 min.

1. stirringThe reaction mixture was stirred overnight
2. custom0.26 min, MH+ 304.1 (non-polar method)
3. customThe reaction was quenched with sat. aq. NH4Cl
4. additiondiluted with ethyl acetate
5. extractionThe reaction mixture was extracted with EtOAc
6. washThe combined organics were washed with water and brine
7. dry with materialdried over sodium sulfate
8. filtrationfiltered off
9. concentrationconcentrated in vacuo
10. customThe crude product was purified by flash chromatography column