Triethylamine → HCID 18432745, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 4-trifluoromethylphenylsulphonyl chloride (6.62 g) in dichloromethane (5 mL) was added dropwise over 10 minutes to a stirred solution of 1-[1-(4-pyridyl)piperazin-4-ylcarbonyl]piperazine (5.7 g) (prepared as in Example 1) in dichloromethane (50 mL) containing triethylamine (6 mL) at 20° C. The reaction mixture was stirred for 2 hours at 20° C. The organic phase was washed with water (3×100 mL) and saturated brine solution (2×100 mL) dried and evaporated. The residue was purified by chromatography on silica gel, eluting with a mixture of dichloromethane: methanol (95:5) to give, as a sandy-coloured solid, 1-(4-trifluoromethylphenylsulphonyl)-4-[1-(4-pyridyl)piperazin-4-ylcarbonyl]piperazine (6.0 g): NMR (CDCl3): 3.08(t, 4H), 3.30-3.40 (m, 8H), 3.40-3.45(t, 4H), 6.63(d, 2H), 7.82(d, 2H), 7.90(d, 2H), 8.30(d, 2H); EI-MS m/z 484(M+H).

Provenance & Evidence