Hexane → 4-[2-[(4-Chlorophenyl)sulfonyl]-2-(2,5-difluorophenyl)ethyl]pyridine

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Reaction Steps

Under an argon atmosphere, the 2-[(4-chlorophenyl)sulfonylmethyl]-1,4-difluorobenzene (200 mg, 0.660 mmol) obtained in Example 5 and 4-pyridylmethanol (144 mg, 1.32 mmol) were dissolved in toluene (6 ml), followed by the addition of cyanomethylenetri-n-butylphosphorane (318 mg, 1.32 mmol). The resulting mixture was heated under reflux for 15 hours under an argon atmosphere. The reaction mixture was then concentrated. The residue thus obtained was subjected to flash chromatography on a silica gel column, and the fraction obtained from the hexane:ethyl acetate=1:2 elulate was concentrated. The solid thus obtained was recrystallized from ethyl acetate, whereby the title compound (81.4 mg, 0.207 mmol, 31%) was obtained as colorless needle crystals.

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