FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a compound of formula II 
from a compound of formula III: 
, where R1 and R2 are independently Cl, Br, F, I, via reaction thereof with an ester of formula (IV) 
, where R3 is C1-6alkyl; to obtain a compound of formula V: 
, which reacts with a hydroxyl ion in the presence of an aryl-alkyl ammonium salt or tetra-alkyl ammonium salt, to obtain a compound of formula VI 
, followed by treatment thereof to obtain a compound of formula VII: 
, which is reduced to obtain a compound of formula II.
EFFECT: high efficiency of the method.
5 cl, 9 ex
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