N-bromobutanimide → 3-(4-Bromomethyl-3-chlorophenyl)-5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydro-isoxazole

Participants

Reaction Conditions

Reaction Steps

In a solution of 13.7 g of 3-(3-chloro-4-methylphenyl)-5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydro-isoxazole in 100 mL of 1,2-dichloroethane, 6.6 g of N-bromosuccinimide and 0.1 g of α,α′-azobisisobutyronitrile were added, and stirred at 70° C. for 3 hours. After the completion of the reaction, the reaction mixture was left and cooled to room temperature, washed with water (70 mL×2), and dehydrated with and dried over saturated sodium chloride aqueous solution and anhydrous sodium sulfate in that order, and then the solvent was distilled off under reduced pressure. The residual solid was washed with diisopropyl ether to obtain 12.1 g of the aimed product as pale yellow crystal.

Provenance & Evidence