反应详情

A DMF (5 ml) solution of 1-(6-bromoquinolin-2-yl)ethanone (129 mg, 0.52 mmol), (trifluoromethyl)trimethylsilane (220 mg, 1.55 mmol) and tetrabutylammonium fluoride (13.5 mg, 0.052 mmol) was stirred at 100° C. for 2 hours. Then the mixture was cooled to room temperature and 1N-hydrochloride aqueous solution (2 ml) was added. After 4 hours, the mixture was quenched with saturated sodium bicarbonate aqueous solution, and the product was extracted with ethyl acetate which was dried over sodium sulfate. Then, filtration, evaporation and purification through silica gel column chromatography, eluting with hexane/ethyl acetate (4:1), furnished the title compound (175 mg, quant.) as a white solid. 1H NMR (300 MHz, CDCl3) δ 1.81 (3H, s), 6.51 (1H, s), 7.64 (1H, d, J=8.1 Hz), 7.66-7.89 (1H, m), 8.00-8.12 (2H, m), 8.21 (1H, d, J=8.8 Hz). MS (ESI): m/z 320, 322 (M+H)+.

1. customthe mixture was quenched with saturated sodium bicarbonate aqueous solution
2. extractionthe product was extracted with ethyl acetate which
3. dry with materialwas dried over sodium sulfate
4. filtrationThen, filtration, evaporation and purification through silica gel column chromatography
5. washeluting with hexane/ethyl acetate (4:1)