O-Xylene → Benzoic acid, 3-sulfo-

참여 물질

반응 단계

250 g of 3-(chlorosulfonyl)benzoic acid containing 35.9% of water (corresponding to 160.2 g (0.73 mol) of 100% chlorosulfonylbenzoic acid) are admixed with 86 g of water and 500 g of xylene and heated in a water separator. A total of 171 ml of water are expelled. The reaction mixture is cooled and the precipitated product filtered off with suction. After drying at 100° C./100 torr (13.16 kPa) 144.3 g of 3-sulfobenzoic acid are obtained, the purity determined by titration being 97.5%; this corresponds to a yield of 95.6%.

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