FIELD: organic chemistry. SUBSTANCE: described is method of preparing halogenmethylbenzoyl cyanides (I) PH-CO-CN, wherein PH is chloromethyl or bromomethyl substituted phenyl radical which carries another 1-4 other radicals by reacting halogenmethylbenzoyl chlorides (II) PH-CO-Cl with liberating cyanide compound in the presence of Lewis acid optionally in inert organic solvent or diluent, whereupon product prepared by said method is isolated. Halogenmethylbenzoyl cyanides are useful intermediate products for synthesis of plant protection agents. EFFECT: highly pure product with high yield. 3 cl, 2 ex
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