反应详情

A RBF was charged with 6-(benzylthio)-1-(2-chloro-3′-fluoro-5-methoxy-[1,1′-biphenyl]-4-yl)quinolin-2(1H)-one (1.00 g, 1.992 mmol), DCM (18.9 ml), acetic acid (0.47 ml), and water (0.47 ml) to give clear, orange solution. The flask was cooled in an ice-water bath for 10 min, then 1,3-dichloro-5,5-dimethylhydantoin (0.654 ml, 4.98 mmol) was added in one portion. After 30 min, 2,3,4,5,6-pentafluorophenol (0.417 ml, 3.98 mmol) and triethylamine (0.694 ml, 4.98 mmol) (dropwise) were added in sequence. After 2 hours, the mixture was diluted with water, then extracted with DCM (2×). The combined organic extracts were dried over magnesium sulfate, filtered, and concentrated. The residue was purified by chromatography on silica gel (40-g Redi-Sep Gold column, 25-g silica gel loading column, 0-50% EtOAc/Heptane) to give perfluorophenyl 1-(2-chloro-3′-fluoro-5-methoxy-[1,1′-biphenyl]-4-yl)-2-oxo-1,2-dihydroquinoline-6-sulfonate (0.600 g, 0.959 mmol, 48.1% yield) as an off-white solid. m/z (ESI) 626.1 (M+H)+.

1. customto give clear
2. temperatureThe flask was cooled in an ice-water bath for 10 min
3. waitAfter 2 hours
4. extractionextracted with DCM (2×)
5. dry with materialThe combined organic extracts were dried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated
8. customThe residue was purified by chromatography on silica gel (40-g Redi-Sep Gold column, 25-g silica gel loading column, 0-50% EtOAc/Heptane)