反应详情

18.90 g of methyl 3-bromomethyl-4-methylsulfonyl-2-methylbenzoate was dissolved in 180 ml of acetonitrile, and 20.67 g of N-methylmorpholine oxide was added over 10 minutes at room temperature. The resulting solution was stirred at room temperature for an hour, poured into ice water, acidified with concentrated hydrochloric acid, and extracted with benzene. The organic layer was washed with water, then with a saturated sodium chloride solution, and dried over anhydrous magnesium sulfate. The solvent was distilled out under reduced pressure to give 11.59 g of the title compound as white crystals. The crude product was washed with ethanol to give white crystals of the title compound. m.p. 108~110° C.

1. extractionextracted with benzene
2. washThe organic layer was washed with water
3. dry with materialwith a saturated sodium chloride solution, and dried over anhydrous magnesium sulfate
4. distillationThe solvent was distilled out under reduced pressure