5,6-DISUBSTITUTED 3-PYRIDYLMETHYLAMMONIUM HALOGENIDES, METHOD OF THEIR SYNTHESIS AND METHODS OF SYNTHESIS 5-(SUBSTITUTED METHYL)-2,3-PYRIDINE CARBOXYLIC ACIDS Russian patent published in 1997 - IPC

FIELD: organic chemistry, chemical technology. SUBSTANCE: products: 5,6-disubstituted 3-pyridylmethylammonium halogenides of the formula (I) given in description where: Z and Z₁ - H; X - Cl, Br or J; Y and y₁ - OR₄; R₄ - H, C₁-C₄-alkyl; Q - RR₁R₂-N^⊕-, or nitrogen-containing heterocycle, R, R₁ and R₂ - C₁-C₄-alkyl. Reagent 1: compound of the formula (II) given in description where: Z, Z₁, Y and y₁ as indicated above. Method involves interaction with halogenating agent in medium of inert organic solvent in the presence of radical initiating agent followed by treatment of the formed reaction mixture with 1 mole trialkylamine. Synthesized compounds were used as semiproducts for synthesis of herbicides. EFFECT: improved method of synthesis. 1 tbl, 10 cl