反应详情

To an aqueous 2.5% acetic acid solution (1 ml) was added an iron powder (10-20 mesh; 192 mg). To the mixture was added a suspension of 3-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]nitrobenzene (232 mg) obtained by Reference Production Example 1 in ethanol (1.5 ml) at 75° C. After stirring at the same temperature for 15 minutes, an additional iron powder (300 mg) was added thereto, and the mixture was stirred at room temperature for 1 hour. After cooling to room temperature, the reaction mixture was filtrated and washed with ethyl acetate. Then, the filtrate was extracted with water and ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography to obtain 3-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]aniline (198 mg).

1. additionTo the mixture was added
2. stirringthe mixture was stirred at room temperature for 1 hour
3. filtrationthe reaction mixture was filtrated
4. washwashed with ethyl acetate
5. extractionThen, the filtrate was extracted with water and ethyl acetate
6. dry with materialThe organic layer was dried over anhydrous sodium sulfate
7. concentrationconcentrated under reduced pressure