METHOD FOR PREPARING ACID CHLORIDE COMPOUNDS Russian patent published in 2003 - IPC

FIELD: organochlorine compounds, chemical technology. SUBSTANCE: invention relates to method for preparing acid chloride compounds of the formula (I) where Az represents substituted pyridyl group of the formula (V) where R² represents hydrogen atom, C_1-6-alkyl group or C_1-6-halide alkyl group and substituent Z represents halide atom. Compound of the formula (II) Az-CCl₃ (II) where Az means the above given value is subjected for interaction with acid of the formula (III) R¹-X-OH (III) where R¹ represents C_1-6-alkyl group or C_1-6-halide alkyl group and X represents CO or SO₂ yielding acid chloride that can be distilled off under reduced pressure in the presence of acid catalyst, for example, sulfuric acid, FeCl₃ and ZnCl₂. Invention provides preparing acid chloride compounds of the formula (I) with high yield, not a long time of reaction without use of solvents and without any ecological problems. EFFECT: improved and simplified preparing method, high yield of compounds. 5 cl, 2 tbl, 4 ex