Acetonitrile → 4-(4-Fluorophenyl)-1-[(2-methyl-1H-imidazol-1-yl)sulfonyl]-1,2,3,6-tetrahydropyridine

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A solution of 4-(4-fluorophenyl)-1,2,3,6-tetrahydropyridine hydrochloride (150 mg, 700 μmol), 2,3-dimethyl-1-[(2-methyl-1H-imidazol-1-yl)sulfonyl]-1H-imidazol-3-ium trifluoromethanesulfonate (410 mg, 1.05 mmol), acetonitrile (5 mL) and triethylamine (98 μL, 700 μmol) was stirred at 25° C. for 24 h. The reaction was diluted with water and extracted with ethyl acetate three times, dried with sodium sulfate, filtered, and concentrated in vacuo. The crude residue was purified by preparative LCMS to yield the desired product (117 mg, 52%). MF=C15H16FN3O2S; LCMS found for C15H17FN3O2S(M+H)+: m/z=322.

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