2-Chlorobenzoic Acid → Benzoic acid, 2-chloro-5-(chlorosulfonyl)-

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-chlorobenzoic acid (5.0 g, 31.93 mmol) was slowly added chlorosulphonic acid (25 mL). The reaction mixture was heated at 100° C. for 5-6 h, followed by stirring at RT for 24 h. The reaction mass was quenched in ice cold water slowly and the solid obtained was filtered off, washed with water and dried to afford 4.0 g of pure product. 1H NMR (300 MHz, DMSO d6): δ 7.50 (d, J=7.8 Hz, 1H), 7.68 (d, J=8.1 Hz, 1H), 7.96 (d, J=1.5 Hz, 1H), 12.69-12.94 (br s, 1H).

Provenance & Evidence