Triethylamine → HCID 17798577, compound

Participants

Reaction Steps

To a solution of 1-[1-(4-pyridyl)-4-piperidylmethyl]-2-piperazinone (2.74 g) and triethylamine (1.67 ml) in dichloromethane (50 ml) was added dropwise at 0° C. 3-bromobenzenesulfonyl chloride (2.56 g), and the mixture was stirred at 0° C. for 1 hour. The reaction solution was diluted with dichloromethane, was washed with water and saturated brine, dried (MgSO4) and concentrated, and the residue was purified with silica gel column chromatography (acetone:methanol=9:11:1) and washed with water to give colorless crystals of 4-(3-bromobenzenesulfonyl)-1-[1-(4-pyridyl)-4-piperidylmethyl]-2-piperazinone (1.28 g). A part of the crystals were treated with hydrochloric acid to give colorless crystals of the title compound as hydrochloride.

Provenance & Evidence