反应详情

607 mg of 3-chloroperoxybenzoic acid (purity of 65% or more) was added to a mixture of 407 mg of 2-(2-ethylsulfanylphenyl)-6-trifluoromethyl-2H-indazole and 5 ml of chloroform under ice cooling, and the mixture was stirred at room temperature for 4 hours. A 10% aqueous sodium thiosulfate solution was poured to the reaction mixture, and the mixture was extracted with chloroform. The organic layer was washed with a saturated aqueous sodium bicarbonate solution and dried over anhydrous magnesium sulfate, then concentrated under reduced pressure to obtain 452 mg of 2-(2-ethylsulfonylphenyl)-6-trifluoromethyl-2H-indazole (hereinafter, referred to as Compound of Present Invention 2)

1. extractionthe mixture was extracted with chloroform
2. washThe organic layer was washed with a saturated aqueous sodium bicarbonate solution
3. dry with materialdried over anhydrous magnesium sulfate
4. concentrationconcentrated under reduced pressure