Process for preparing bromine-containing aromatic or condensed n- or o-containing heterocyclic compounds

Usage: brominated aromatic or fused N- or 0-containing heterocyclic compounds have utility as intermediates in the preparation of dyes and industrial organic synthesis. Reagent 1; appropriate aromatic or heterocyclic compound containing two or more acceptor groups selected from COOH, N02, SRH, halogen, 50zN. Reagent 2: bromo, or a salt of hydrobromic acid with concentrated or fuming nitric acid or its salt and sulfuric acid, oleum RLI. Conditions: 20-120 & amp; deg; C, the molar ratio of bromine, or a salt of hydrobromic acid: nitric acid or a salt of nitric acid: sulfuric acid or oleum 0,5-3,2, or 1.0-7.0: 0.5 -0.3, or 1.0: 4.0: 6.70, respectively, based on 1 mole of the starting compound. Table 4.