3-(Methylsulfonyl)benzenesulfonyl chloride → N-[3-(3,5-Dimethoxy-phenylamino)-quinoxalin-2-yl]-3-methanesulfonyl-benzenesulfonamide

Participants

Reaction Conditions

Reaction Steps

N-(3,5-dimethoxyphenyl)quinoxaline-2,3-diamine (50 mg, 0.17 mmol), 3-(methylsulfonyl)benzenesulfonyl chloride (64 mg, 0.26 mmol, commercially available from Matrix) are dissolved in a 1 to 1 mixture of pyridine and 1,2-dichlorobenzene (0.4 ml) and the reaction mixture is heated at 100° C. in the microwave for 20 min. When TLC confirms the total consumption of the starting material, the reaction mixture is cooled down to rt. The precipitate formed is filtered and purified by column chromatography, using CHCl3: MeOH as eluent, to afford 18 mg (21%) of the title compound as a light brown solid. HPLC (max plot) 84%, rt. 4.2 min. LC/MS: (ES+): 515.

Provenance & Evidence