Pyridine → N-[5-Chloro-4-[(4-chlorophenylsulfonyl)(2,5-difluorophenyl)methyl]pyridin-2-yl]piperidine-1-sulfonamide

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Reaction Conditions

Reaction Steps

A pyridine (2 ml) solution of the [5-chloro-4-[(4-chlorophenylsulfonyl)(2,5-difluorophenyl)methyl]pyridin-2-yl]amine (101 mg, 0.235 mmol) obtained in Example 196 and piperidine-1-sulfonyl chloride (48 mg, 0.259 mmol) was stirred at 70° C. for 19 hours. To the reaction mixture was added piperidine-1-sulfonyl chloride (48 mg, 0.259 mmol) and the resulting mixture was stirred at 70° C. for 4 days. The reaction mixture was returned to room temperature and then, concentrated under reduced pressure. The residue thus obtained was diluted with ethyl acetate. The diluted solution was washed with water and brine, dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated under reduced pressure. The residue thus obtained was subjected to flash silica gel column chromatography. The fraction obtained from the hexane:ethyl acetate (=4:1) eluate was concentrated under reduced pressure to yield a white solid. The resulting solid was washed with hexane-ether, and collected by filtration to give the title compound (63 mg, 0.109 mmol, 47%) as a white powder.

Provenance & Evidence