Process for the preparation of nitrobenzoic and anthranilic acids.

摘要

Preparation of nitrobenzoic acids I

(X<1>, X<2> = fluorine, chlorine, bromine, hydrogen or nitro) by oxidation of the corresponding nitrotoluene II

with nitric acid, by carrying out the oxidation in the presence of sulphuric acid and vanadium(V) compounds,
and preparation of anthranilic acids III

(Y<1>, Y<2> = fluorine, chlorine, bromine, hydrogen or amino) from the nitrobenzoic acids I by reduction.