Hydrochloric Acid → Benzenesulfonyl chloride, 4-chloro-3-nitro-

Participants

Reaction Conditions

Reaction Steps

Under a nitrogen atmosphere, 350 ml. of chlorosulfonic acid was added to 236 g. (1.50 mole) of 2-chloronitrobenzene. The resulting green colored solution was heated for 18 hours at 80° C., then the temperature was increased to 140° C. and held at this temperature until HCl gas evolution ceased (about 90 minutes). The reaction mixture was then cooled to 25° C. and slowly poured onto 4 liters of ice. After stirring for 20 minutes the mixture was filtered to obtain a pale yellow solid. The filter cake was sucked dry then allowed to dry in a vacuum oven at 25° C. overnight, m.p. 37°-38° C., yield 362.3 g. (94%).

Provenance & Evidence