OBTAINING NOVEL CLASS OF LIQUID-CRYSTALLINE COMPOUNDS, WHICH CONTAIN FOUR-ATOM FLUORINE-CONTAINING FRAGMENT OF BRIDGE TYPE Russian patent published in 2014 - IPC C09K19/12 C07C43/205 C07C43/215 C07C43/225 C07C43/14 C07C321/16 C07C321/20 C07C319/14 

FIELD: chemistry.

SUBSTANCE: invention relates to compound. In formula (I) Alk represents alkyl substituent: C₄H₉, C₆H₁₃, C₁₀H₂₁, C₁₅H₃₁; R₁ represents substituents, selected from group: aryl - phenyl, 4-CH₃C₆H₄, 3-CH₃C₆H₄, 2-CH₃C₆H₄, 4-ClC₆H₄, 4-FC₆H₄, 2-FC₆H₄, 4-CH₃OC₆H₄, 4-i-PrC₆H₄, 4-i-BuC₆H₄, 4-(n-C₈H₁₇)C₆H₄, 2-naphthyl; X represents oxygen or sulphur, n=0, 1 or 2, CH_nCF_n represents fragment: if n=2 CH₂-CF₂, if n=1 CH=CF, if n=0 C≡C. Invention also relates to method of compound obtaining.

EFFECT: claimed compounds are thermotropic liquid crystals.

3 cl, 5 tbl, 18 ex