FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a compound or salt thereof of formula (I), which involves reaction of compound or salt thereof of formula (II), and aniline derivative of formula (III), in water or a mixed solvent of water and organic solvent in presence of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and substantially in absence of a base:
.
EFFECT: technical outcome is a novel improved method of producing a compound or salt thereof of formula (I).
3 cl, 1 tbl, 5 ex
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