反应详情

温度

25 °C

To a solution of 1-(1-benzenesulfonyl-5-ethylsulfanyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-ethanol (3.0 g, 7.0 mmol) in dichloromethane (150 mL) was added Dess-Martin periodinane (7.4 g, 17.4 mmol) at 25° C. The reaction mixture was stirred at 25° C. for 1 h and then quenched with a saturated aqueous sodium bicarbonate solution (60 mL). The mixture was extracted with ethyl acetate (250 mL), washed with a saturated aqueous sodium bicarbonate solution (3×50 mL), brine, dried over anhydrous sodium sulfate and then concentrated in vacuo. The residue was purified by flash column chromatography (silica gel from QingDao, 200-300 mesh, 20% ethyl acetate/hexanes) to afford 1-(1-benzenesulfonyl-5-ethanesulfinyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-ethanone (1.5 g, 48%) as a light yellow solid: LC/MS m/e calcd for C22H24N2O4S2 [M+H]+ 445.58, observed 444.9.

1. customquenched with a saturated aqueous sodium bicarbonate solution (60 mL)
2. extractionThe mixture was extracted with ethyl acetate (250 mL)
3. washwashed with a saturated aqueous sodium bicarbonate solution (3×50 mL), brine
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated in vacuo
6. customThe residue was purified by flash column chromatography (silica gel from QingDao, 200-300 mesh, 20% ethyl acetate/hexanes)