Methylamine → 4-(5-(3,5-Dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-N,2-dimethylbenzamide

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Reaction Steps

In a mixture of 2.3 g of 40% methylamine aqueous solution and 10 mL of tetrahydrofuran, a solution of 1.0 g of 4-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]-2-methylbenzoyl-chloride synthesized in Step 4 of Synthetic Example 1 in 10 mL of tetrahydrofuran was added dropwise under cooling with ice and with stirring. After the completion of the addition dropwise, it was continued to stir further for 18 hours. After the completion of the reaction, the solvent was distilled off under reduced pressure, the residue was dissolved in 100 mL of ethyl acetate, washed with 50 mL of water, then dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure to obtain 1.0 g of the aimed product as pale yellow crystal.

Provenance & Evidence