FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining 4-amino-3-chloro-5-fluoro-6-(substituted)picolinate of formula I 
, where R represents (C1-C4)alkyl, cyclopropyl, (C2-C4)alkenyl or phenyl, which contains from 1 to 4 substituents, as such independently selected are halogen, (C1-C4)alkyl, (C1-C4)haloalkyl, (C1-C4)alkoxy or (C1-C4)haloalkoxy; and R1 represents (C1-C12)alkyl or non-substituted (C7-C11)arylalkyl, which includes fluoride substitution, amination, reaction with hydrazine, halogenation, hydrolysis and etherification, as well as catalised by transition metals combination.
EFFECT: method improvement.
4 cl, 6 ex
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RU2652132C2 |
