反应详情

Triethyl amine (965 mg, 9.5 mmol) and methanesulfonyl chloride (820 mg, 7.2 mmol) were added to a solution of [5-(3-chloro-phenyl)-isoxazol-3-yl]-methanol (1.0 g, 4.8 mmol) in dichloromethane (50 mL) at 0° C. After 1 hour, the reaction mixture was quenched with cold saturated sodium bicarbonate and then the organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, filtered, and concentrated to afford methanesulfonic acid 5-(3-chloro-phenyl)-isoxazol-3-ylmethyl ester (1.4 g, 100%, light brown solid). 1H NMR (CDCl3) δ (ppm): 7.80 (s, 1H), 7.70 (m, 1H), 7.45 (m, 2H), 6.73 (s, 1H), 5.37 (s, 2H), 3.16 (s, 3H).

1. customthe reaction mixture was quenched with cold saturated sodium bicarbonate
2. washthe organic layer was washed with saturated brine
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated