FIELD: chemistry.
SUBSTANCE: invention relates to compounds of structural formula 
, where R1=Cl, R2, R3, R4, R5=H O-(2,3-dihydroxyprop-1-yl)-2-chlorophenol; R3=Cl, R1, R2, R4, R5=H O-(2,3-dihydroxyprop-1-yl)-4-chlorophenol; R1, R4=Cl, R2, R3, R5=H O-(2,3-dihydroxyprop-1-yl)-2,5-dichlorophenol; R1=CH3, R3=Cl, R2, R4, R5=H O-(2,3-dihydroxyprop-1-yl)-2-methyl-4-chlorophenol; R1, R3 ,R5=Cl, R2, R4=H O-(2,3-dihydroxyprop-1-yl)-2,4,6-trichlorophenol; R1, R3, R4=Cl, R2, R5=H O-(2,3-dihydroxyprop-1-yl)-2,4,5-trichlorophenol, used against weeds of the grass family.
EFFECT: high activity of the compounds.
2 cl, 1 tbl
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