Hydrogen Peroxide → Acetamide, 2-(((4-chlorophenyl)methyl)sulfinyl)-N-hydroxy-

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Reaction Conditions

Reaction Steps

31.7 g (0.091 mol) of p-chlorobenzylmercaptoacetohydroxamic acid are mixed with 100 ml of anhydrous acetic acid and 9 ml. of hydrogen peroxide of 110 volumes strength are added. The temperature, which is 20° C. at the start, rises and solution of the precipitate formed is also observed. The temperature is maintained at 50° C. and after several minutes it is found that the sulphinyl derivative sets solid. 50 ml of acetic acid are now added and the temperature is kept at 50° C. for 1 hour whilst stirring vigorously. The mixture is cooled and the p-chlorobenzylsulphinyl-acetohydroxamic acid is filtered off. This acid is recrystallised from acetic acid and filtered off, the precipitate is washed with water and with ethanol, and dried, and 31.9 g of CRL 40,411 are collected. Yield 85%; instantaneous melting point 210° C. (with decomposition).

Provenance & Evidence