m-Chloroperbenzoic acid → HCID 118432011, compound

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Reaction Steps

To a mixture of 1-(3-Chloro-phenyl)-5-(4′-methylsulfanyl-biphenyl-3-yl)-3-pentafluoroethyl-4,5-dihydro-1H-pyrazole (127.0 mg, 0.26 mmol) prepared in Example 24 in dichloromethane (5.0 mL), was slowly added meta-chloroperbenzoic acid (77%, 69.0 mg, 0.31 mmol) at 0° C. The reaction mixture was stirred at room temperature 30 minutes, quenched with a saturated solution of sodium hydrogen carbonate, and then extracted with dichloromethane three times. The combined extract was washed with brine, dried on anhydrous magnesium sulfate, and then concentrated under reduced pressure to give a yellow liquid residue. The resulting residue was purified by silica gel column chromatography (eluent: ethyl acetate/n-hexane=1/5, 1/1) to give 61.0 mg of the titled compound as a yellow liquid.

Provenance & Evidence