S([O-])([O-])=O.[Na+].[Na+].C(=O)(O)[O-].[Na+].[C:12]1([CH3:22])[CH:17]=[CH:16][C:15]([S:18](Cl)(=[O:20])=[O:19])=[CH:14][CH:13]=1.[Na].Cl[CH2:25]C(O)=O>O>[CH3:25][S:18]([C:15]1[CH:16]=[CH:17][C:12]([CH3:22])=[CH:13][CH:14]=1)(=[O:20])=[O:19]176.4 g of sodium sulfite and 226 g of sodium bicarbonate were dissolved in 1800 ml of water and cooled down to 15° C. 244 g of p-toluenesulfonyl chloride were added at that temperature with thorough stirring. The mixture was additionally stirred for 3 hours at 15° C. and overnight at room temperature. It was then heated to 40° C. and a solution of 175 g of the sodium salt of chloroacetic acid in 400 ml of water was added. The reaction mixture was stirred under reflux for 24 hours. After cooling down to 5°-10° C. the precipitated product was filtered off with suction and dried at 50° C. under reduced pressure, leaving 192.5 g of 4-methylsulfonyltoluene (melting point 83°-86° C).
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