Sulfuric Acid → HCID 21835780, compound

Participants

Reaction Conditions

Reaction Steps

5 g (21.8 mmol) of N-carboxymethylene-4-chloro-anthranilic acid are dissolved in 40 ml of n-butanol. 108 mg (1.05 mmol) of concentrated H2SO4 are added and the mixture is heated at 75° C. for 2 hours. After cooling to room temperature, the product which has precipitated out is filtered off with suction, washed with n-butanol and dried. 4.7 g (16.5 mmol; 76%) of pale yellow crystalline N-carbobutoxymethylene-4-chloro-anthranilic acid are obtained.

Provenance & Evidence