Methyl chloroformate → HCID 67164907, compound

Participants

Reaction Steps

In 0.02 g of 55% oily sodium hydride suspended in 3 mL of tetrahydrofuran, a solution of 0.17 g of 4-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]-2-methyl-N-(2-pyrimidinyl)benzoic acid amide synthesized similarly to Step 5 of Synthetic Example 1 in 3 mL of tetrahydrofuran was added dropwise. After the completion of the addition dropwise, it was continued to stir at the same temperature for 10 minutes, then 0.05 g of methyl chloroformate was added, and continued to stir at the same temperature for 1 hour. After the completion of the reaction, the reaction mixture was poured in 10 mL of ice water, extracted with ethyl acetate (10 mL×2), the organic phase was dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with silica gel column chromatography that was eluated with ethyl acetate to obtain 0.11 g of the aimed product as colorless resinous substance.

Provenance & Evidence