Nitric Acid → 3-Methylsulfonyl-4-chloro-5-nitrobenzoic acid

Participants

Reaction Conditions

Reaction Steps

To a stirred mixture of concentrated sulfuric acid (75 ml.) and concentrated nitric acid (48 ml.), cooled to 15° C., is added a solution of 3-methylsulfonyl-4-chlorobenzoic acid (31.5 g.; 0.134 mole) in concentrated sulfuric acid (185 ml.). The reaction mixture is heated on a steam bath for 21/2 hours then poured into ice. There is collected 34 g. (91%) of 3-methylsulfonyl-4-chloro-5-nitrobenzoic acid, m.p. 197° C. after recrystallization from ethanol.

Provenance & Evidence