Chlorosuccinimide → 3-(3-Chloro-4-methylphenyl)-5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydro-isoxazole

Participants

Reaction Conditions

Reaction Steps

In a solution of 10.6 g of 3-chloro-4-methylbenzaldoxime in 60 mL of 1,2-dimethoxyethane, 9.2 g of N-chlorosuccinimide was added, and stirred at 70° C. for 2 hours. Then, the reaction mixture was left and cooled to room temperature, 11.3 g of 3,5-dichloro-1-(1-trifluoromethylethenyl)benzene synthesized in Step 1 of Synthetic Example 1, 15.6 g of potassium hydrogen carbonate and 10 mL of water were added, and continued to stir at room temperature further for 20 hours. After the completion of the reaction, the reaction mixture was diluted with 70 mL of ethyl acetate, washed with water (50 mL×1), 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 13.8 g of the aimed product as white crystal.

Provenance & Evidence