Methylamine → 4-(Methylsulfamoyl)benzoic acid

Participants

Reaction Steps

To a solution of 4-chlorosulfonylbenzoic acid (5.8 g, 25.2 mmol) in DCM (200 mL), a solution of methylamine (52.15 mL, 2 M in THF) is added. The mixture is stirred overnight at rt before the solvent is evaporated. The residue is dissolved in sat. aq. NH4Cl solution and extracted with EA. The organic extract is washed with water, dried over MgSO4, filtered and the solvent of the filtrate is evaporated to give 4-methylsulfamoyl-benzoic acid (3.77 g) as a white solid; LC-MS: tR=0.64 min.

Provenance & Evidence