4-Chloro-3-nitrobenzenesulfonamide → 124839-32-3

Participants

Reaction Steps

20 ml of hydrazine hydrate were added to a suspension of 47.33 g of 4-chloro-3-nitrobenzenesulfonamide [prepared as described in: J. Am. Chem. Soc. 73, 2558 (1951)] in 200 ml of abs. ethanol. The mixture was boiled under stirring for 30 minutes, then cooled down. The crystals were filtered by suction and thoroughly washed with water to obtain 43.38 g (93.4%) of 2-nitro-4-sulfamoylphenylhydrazine, m.p.: 217°-218° C. (with decomposition).

Provenance & Evidence