FIELD: chemistry.
SUBSTANCE: in method of obtaining compounds of formula I 
X represents 
, R1 represents NO2, CN, COOR3, CON(R3)2, COR3, SO2R4, SO2N(R3)2, CF3, F or Cl, R2 represents H, Hal, A, OR3, N(R3)2, NO2, CN, COOR3, CON(R3)2, NR3COA, NR3CON(R3)2, NR3COOR3, NR3SO2A, -[C(R5)2]n-Ar, -[C(R5)2)n-Het, -[C(R5)2]n-cycloalkyl, COR3, SO2N(R3)2 or SO2R4, R3 represents H, A, -[C(R5)2]n-Ar or -[C(R5)2]n-Het, R4 represents A, -[C(R5)2]n-Ar or -[C(R5)2]n-Het, R5 represents H or A', Ar represents phenyl, which is unsubstituted or mono-, di- or tri- substituted with Hal, A, OR5, N(R5)2, NO2, CN, COOR5, CON(R5)2, NR5COA, NR5SO2A, COR5, SO2N(R5)2 or S(O)nA, Het represents mono- or bicyclic saturated, unsaturated or aromatic heterocycle, containing 1-4 atoms of N, O and/or S, which is unsubstituted or mono- or di-substituted with Hal, A, OR5, N(R5)2, NO2, CN, COOR5, CON(R5)2, NR5COA, NR5SO2A, COR5, SO2N(R5)2, S(O)nA and/or (=O), carbonyl oxygen A' represents unbranched or branched alkyl, containing 1-6 carbon atoms, A represents unbranched, branched or cyclic alkyl, containing 1-12 carbon atoms, in which one or two CH2 groups can be substituted with O or S atoms and/or groups -CH=CH- and/or additionally 1-7 H atoms can be substituted with F, Hal represents F, Cl, Br or I, n represents 0, 1 or 2, m represents 0, 1, 2, 3 or 4, and their salts, which is characterized by the following: a) compound of formula II [X-NH2] in which X has values given above, is subjected to reaction with 5-chlor-2,3-dihydro-1,4-dioxin obtaining compound of formula III 
, in which X has values given above, b) then compound of formula III is cycled, obtaining compound of formula I, and c) said compound is optionally converted into its salt by converting base or acid of formula I into one of its salts.
EFFECT: improvement of compounds properties.
28 cl, 11 ex
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