A one-pot two-step synthetic strategy for the preparation of aryl carboxamido sulfonic acid derivatives was developed. The synthesis started from m-(chlorosulfonyl) benzoyl chloride, which was reacted with amines, alcohols, thiols, or sodium azide and catalytic activator at rt to give the corresponding sulfonic acid derivatives in good yields. The short reaction times and the one-pot chemoselective nature of the procedure diminished undesired side ...
