FIELD: chemistry.
SUBSTANCE: invention is related to the production method for 2,3-dichloropyridine, in which interaction is provided between 3-amino-2-chloropyridine with nitrite of alkaline metal in presence of aqueous hydrochloric acid with production of diazonium salt; and then diazonium salt is decomposed in presence of copper catalyst, in which at least approximately 50% of copper is represented by copper with oxidation extent (II).
EFFECT: increased yield of finished product in production scale.
27 cl, 5 ex
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