Diisopropylethylamine → 1-[(5-Chloro-2-naphthyl)sulfonyl]-4-[4-fluoro-2-(trifluoromethyl)phenyl]piperazine

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Reaction Steps

Sulfonylation of 1-(4-fluoro-2-(trifluoromethyl)phenyl)piperazine (193 mg, 3.888 mmol) with 5-chloronaphthalene-2-sulfonyl chloride (202.1 mg, 0.777 mmol) was carried out according to the representative sulfonation procedure described in Example 1 using anhydrous dichloromethane (3 mL) as solvent and diisopropylethylamine (0.7 mL, 3.887 mmol) as base. 1-[(5-chloro-2-naphthyl)sulfonyl]-4-[4-fluoro-2-(trifluoromethyl)phenyl]piperazine was obtained in 69% yield (256 mg) as white solid.

Provenance & Evidence