FIELD: chemistry.
SUBSTANCE: invention relates to a method for synthesis of 2,3-benzo-5,7-disubstituted-1,4-cycloheptadiazines of general formula , where 1) R1=2-thienyl; R2=trifluoromethyl; 2) R1-R2=1,3-(5,5-dimethyl)cyclohexyl; 3) R1=R2=methyl, which can be used as extraction agents for non-ferrous and platinum-group metals, as well as in medicine. The method of involves reaction of ortho-phenylenediamine and the corresponding 1,3-diketone in molar ratio of components equal to 1:1 and while heating to temperature from 50°C to 80°C for 1-3 hours in dry benzol or without the benzol, and in the absence of a condensing agent.
EFFECT: wider field of use.
1 tbl, 3 ex
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