Sodium Chloride → 3-(Chlorosulfonyl)-4-methylbenzoic acid

Participants

Reaction Conditions

Reaction Steps

Sodium chloride (8 g, 138 mmol) is added to chlorosulfonic acid (30 mL, 451 mmol) and in small portions 4-methyl-benzoic acid (4 g, 29 mmol) is added to the stirred mixture. After complete addition, the reaction is heated at 122° C. for 16 h. The reaction mixture is cooled and poured into ice-water. The organic material is extracted with ethyl acetate. The organic layer is washed with a saturated sodium chloride solution, dried over magnesium sulfate, filtered, and the solvent is removed in vacuo. The residue is used as is in the next step.

Provenance & Evidence