FIELD: chemistry.
SUBSTANCE: invention relates to the method for producing 5-bromo-4-chloro-3-nitro-1H-pyrrolo[2,3-b]pyridine of formula 
comprising the step of bromination of 4-chloro-3-nitro-1H-pyrrolo [2,3 -b] pyridine of formula 
with a brominating agent to give 5-bromo-4-chloro-3-nitro-1H-pyrrolo[2,3-b]pyridine of formula I. Bromination is carried out at 25°C using acetic acid as a solvent.
EFFECT: improving the compound properties.
6 cl, 1 ex
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