Chlorosuccinimide → 5-((2,6-Difluorobenzyloxy)methyl)-5-methyl-3-(2-(trifluoromethyl)phenyl)-4,5-dihydroisoxazole

関与物質

反応手順

223 mg of 2-trifluoromethylbenzaldehyde oxime was dissolved in 4 mL of 1,2-dichloroethane, and then, 230 mg of N-chlorosuccinimide and 0.4 mL of dimethylformamide were slowly added thereto at a temperature of 0° C. The reaction mixture was stirred at room temperature for 1 hour, and then, the reaction state was confirmed by TLC. When the oxime, which was a starting material, disappeared, the reaction mixture was cooled to a temperature 0° C., and then, 182 mg of NaHCO3, 27 mg of tetrabutylammonium iodide, and 342 mg of 1,3-difluoro-2-((2-methylallyloxy)methyl)benzene were sequentially, slowly added thereto. The reaction mixture was stirred at room temperature overnight, and then, diluted with dichloromethane, and then, washed with water, and the obtained organic layer was dried by using magnesium sulfate and concentrated, and the concentrate was separated by silicagel column chromatography to obtain 410 mg of 5-((2,6-difluorobenzyloxy)methyl)-5-methyl-3-(2-(trifluoromethyl)phenyl)-4,5-dihydroisoxazole.

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