Methyl iodide → 5-Bromo-2-[(4-methoxy-benzenesulfonyl)-methyl-amino]-3-methyl-benzoic acid methyl ester

Participants

Reaction Steps

To a solution of 5.00 g (0.012 mol) of 5-bromo-2-(4-methoxy-benzenesulfonylamino)-3-methyl-benzoic acid methyl ester (U.S. Pat. No. 5,776,961) in 40 mL of DMF was added 0.604 g (0.015 mol) of 60% sodium hydride. The resulting mixture was stirred at room temperature foe 0.5 h and then 1.2 ml (0.018 mol) of iodomethane was added. The reaction was then stirred for 15 h and then diluted with ether. The organics were washed with water, dried over MgSO4, filtered and concentrated in vacuo. The residue was triturated with ether and the resulting white solid was collected by filtration and dried in vacuo to provide 4.45 g (86%) of the N-methyl sulfonamide. Electrospray Mass Spec 429.8 (M+H)+

Provenance & Evidence