4-(Difluoromethoxy)benzenesulfonyl chloride → 4-Difluoromethoxy-N-[4-methoxy-3-(4-methyl-piperazin-1-yl)-phenyl]-benzenesulfonamide

Participants

Reaction Steps

0.18 mL of 4-difluoromethoxybenzene sulfonyl chloride (1.13 mmol) were added to a solution of 0.25 g of (1.13 mmol) 4-methoxy-3-(4-methyl-piperazin-1-yl)-phenylamine in 10 mL of pyridine. The reaction mixture was stirred for 16 h at room temperature. The solvent was evaporated at reduced pressure. After addition of toluene and dichloromethane the mixture was again evaporated twice. The thus obtained residue was partitioned between dichloromethane and 5% aqueous ammoniumchloride. The organic phase was washed with saturated aqueous sodium chloride solution, dried over sodium sulfate, filtered, and the solvent was evaporated under reduced pressure. The obtained crude product was further purified via HPLC to yield 0.395 g of the desired title compound.

Provenance & Evidence