反应详情

In 4 mL of N,N-dimethylacetamide, 0.23 g of 50% N,N-dimethylformamide solution of 1-aminopyrazole was added, and 0.30 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 was added at room temperature with stirring, and stirred at the same temperature for 2 hours. After the completion of the reaction, 20 mL of ethyl acetate was added in the reaction mixture, washed with water (20 mL×1), and then the organic phase was dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with neutral alumina column chromatography that was eluated with chloroform to obtain 0.22 g of the aimed product as yellow resinous substance.

1. stirringstirred at the same temperature for 2 hours
2. additionwas added in the reaction mixture
3. washwashed with water (20 mL×1)
4. dry with materialdried over saturated sodium chloride aqueous solution
5. distillationanhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure
6. customThe residue was purified with neutral alumina column chromatography that