反应详情

To a stirred solution of 2,2-dimethyl-5-(pyridin-4-yl)furan-3(2H)-one (0.81 g, 4.28 mmol) in CHCl3 (20 mL), NBS (1.3 g, 7.28 mmol) was added portionwise at RT. The reaction mixture was then stirred for 2 h and diluted with DCM (100 mL). The organic layers were washed with water (50 mL) and brine (50 mL), dried over Na2SO4, filtered, and then concentrated in vacuo to obtain the crude product. The crude material was purified via silica gel column chromatography to afford 4-bromo-2,2-dimethyl-5-(pyridin-4-yl) furan-3(2H)-one (0.25 g, 21%) as a solid

1. washThe organic layers were washed with water (50 mL) and brine (50 mL)
2. dry with materialdried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. customto obtain the crude product
6. customThe crude material was purified via silica gel column chromatography