FIELD: chemistry.
SUBSTANCE: invention relates to heterocyclic ortho-dicarbonitriles, specifically to substituted tribenzo[1,4]dioxocin-7,8-dicarbonitriles of formula 1a-f, which can be used in the future to obtain structural analogues of boron dipyrromethenes with improved optical properties due to expansion of aromatic 7 g-system, wherein presence of peripheral substitutes will increase solubility in organic solvents. 1a-f; a: R1 = CH3, R2 = 4-CH3C6H4; b: R1 = CH3, R2 = 3-CH3C6H4; c: R1 = OC2H5, R2 = CHO; d: R1 = OC2H5, R2 = CH2OH; e: R1 = OCH3, R2 = CH2CH=CH2; f: R1 = R2 = CH3.
EFFECT: novel compounds are obtained, which lead not only to increase in organic solubility, but also enable to adjust optical properties of future fluorophores.
1 cl, 1 tbl, 9 ex
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