Water → HCID 86614796, compound

Participants

Reaction Steps

5-Trifluoromethyl-6-(4-trifluoromethoxyphenoxy)-4-hydroxy-2,3-dimethyl-quinoline (30 mg) prepared in Synthesis Example 3 was dissolved in 1 mL of dimethylformamide. Under ice cooling, 4.3 mg of 60% sodium hydride was added to the solution, and the mixture was stirred for one hr. Thereafter, 10.4 mg of cyclopropanecarbonyl chloride was added thereto, and the mixture was stirred at room temperature for 3 hr. The reaction mixture was added to 5 mL of water, and the mixture was extracted with 5 mL of ethyl acetate. The ethyl acetate layer was washed with a saturated sodium hydrogencarbonate solution and saturated brine, was dried over anhydrous sodium sulfate, and was then concentrated under the reduced pressure. The crude product thus obtained was purified by chromatography on silica gel (Mega Bond Elut SI (Varian) 10 mL, solvent: n-hexane/ethyl acetate) to give 4-Cyclopropanecarbonyloxy-2,3-dimethyl-6-(4-trifluoromethoxyphenoxy)-5-trifluoromethyl-quinoline (13.8 mg, yield 39.5%).

Provenance & Evidence