反应详情

Orcinol monohydrate (1.42 g, 10.0 mmol) and 2-chloro-5-trifluoromethylbenzenesulfonyl chloride (2.79 g, 10.0 mmol) were mixed in saturated aqueous NaHCO3 (30 mL) and diethyl ether (30 mL). The biphasic mixture was stirred vigorously at ambient temperature overnight. The reaction mixture was diluted with water (50 mL) and extracted into ethyl acetate (3×50 mL). The organic phase was washed with brine (2×50 mL) and dried over Na2SO4. After removing the solvent in vacuo, the residue was purified by flash column chromatography (dichloromethane to 3% ethyl acetate in dichloromethane) to give the title compound as a pale yellow oil (1.50 g, 41%). 1H-NMR (300 MHz, CDCl3) δ 8.24 (d, J=1.9 Hz, 1H), 7.83 (dd, J=8.3, 2.1 Hz, 1H), 7.76 (d, J=8.4 Hz, 1H), 6.57 (s, 1H), 6.55 (s, 1H), 6.46 (s, 1H), 5.07 (br s, 1H), 2.24 (s, 3H).

1. extractionextracted into ethyl acetate (3×50 mL)
2. washThe organic phase was washed with brine (2×50 mL)
3. dry with materialdried over Na2SO4
4. customAfter removing the solvent in vacuo
5. customthe residue was purified by flash column chromatography (dichloromethane to 3% ethyl acetate in dichloromethane)