2,5-dichloro-4-nitro-N-benzenesulphonylaniline → 2,5-Dichloro-4-nitroaniline

Participants

Reaction Steps

0.44 mole (154 g) of 2,5-dichloro-4-nitro-N-benzenesulphonylaniline prepared in the previous stage is suspended in 600 ml of concentrated sulphuric acid. After 24 hours' stirring at ambient temperature the reaction mixture is poured onto 5 kg of ice. The expected product precipitates. After filtering, washing to neutrality and drying, it melts at 156° C.

Provenance & Evidence