4-Iodobenzenesulfonyl chloride → HCID 17798575, compound

Participants

Reaction Steps

To a mixture of 1-[1-(4-pyridyl)-4-piperidylmethyl]-2-piperazinone (549 mg), sodium bicarbonate solution (5 ml), ethyl acetate (10 ml) and THF (5 ml) was added dropwise, under ice-cooling, a solution of 4-iodobenzenesulfonyl chloride (1.21 g) in THF (10 ml), and the mixture was stirred at 0° C. for 1 hour. The separated organic layer was washed with saturated brine, dried (MgSO4) andconcentrated, and the residuewas purifiedwith silica gel column chromatography (acetone:methanol=9:1→1:1) and washed with water to give colorless crystals of 4-(4-iodobenzenesulfonyl)-1-[1-(4-pyridyl)-4-piperidylmethyl]-2-piperazinone (155 mg). A part of the crystals were treated with hydrochloric acid to give colorless crystals of the title compound as hydrochloride.

Provenance & Evidence