p-Bromobenzenesulfonyl chloride → 4-bromo-N-methyl-N-(3-(1,2,3,4-tetrahydroquinoxalin-3-one-1-carbonyl)benzyl)-benzenesulphonamide

Participants

Reaction Steps

4-Bromobenzenesulphonyl chloride (29 mg, 0.11 mmol) was added to a solution of 1-(3-(methylaminomethyl)benzoyl-1,2,3,4-tetrahydroquinoxalin-3-one (30 mg, 0.10 mmol) in dichloromethane (10 ml). The pH was adjusted to pH9 with triethylamine and the mixture stirred for 18 h. The mixture was reduced in vacuo, taken up in ethyl acetate, washed with water and brine, dried and reduced. Chromatography (50% EtOAc/50% 60-80 pet ether) afforded 4-bromo-N-methyl-N-(3-(1,2,3,4-tetrahydroquinoxalin-3-one-1-carbonyl)benzyl)-benzenesulphonamide (34 mg, 60%) as a white solid.

Provenance & Evidence