m-Chloroperbenzoic acid → N-cyclopropyl-1-{4-[(ethylamino)carbonyl]phenyl}-5-[(phenylsulfinyl)methyl]-1H-1,2,3-triazole-4-carboxamide

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Reaction Conditions

Reaction Steps

N-Cyclopropyl-1-{4-[(ethylamino)carbonyl]phenyl}-5-[(phenylthio)methyl]-1H-1,2,3-triazole-4-carboxamide (145 mg, 0.344 mmol) obtained in Example 130 was dissolved in THF (3.0 ml), m-chloroperbenzoic acid (purity 65%, 110 mg, 0.412 mmol, 1.2 eq.) was added with stirring at 0° C., and the mixture was stirred for additional 1.5 hr. The reaction mixture was diluted with ethyl acetate (20 ml), washed with 5% aqueous sodium sulfite solution, 2% aqueous sodium hydrogen carbonate solution and saturated brine, dried over anhydrous sodium sulfate and concentrated. The residue was subjected to column chromatography (elution solvent, ethyl acetate-hexane=1:1-5:1) on silica gel (manufactured by E. Merck, Art.7734, 10 g). The fraction obtained by elution with ethyl acetate-hexane (5:1) was concentrated, and diethyl ether was added. The precipitate was collected by filtration, washed with diethyl ether and dried to give the title compound as a white powder (38 mg, 0.087 mmol, 25.3%).

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