Diphenylacetylene compound, process for preparing the same and liquid crystal composition and element comprising the same
申请人:SUMITOMO CHEMICAL COMPANY LIMITED
公开号:EP0648723A1
公开(公告)日:1995-04-19
A diphenylacetylene compound of the formula [1]:
wherein R is a C₁-C₁₂ alkyl group, a C₂-C₁₂ alkenyl group or a C₂-C₁₆ alkoxyalkyl group; X¹, X², X³, X⁴, Y¹, Y², Y³ and Y⁴ are independently from each other a -CH- group, a -CF- group or a nitrogen atom; A is a hydrogen atom, a fluorine atom, a trifluoromethyl group, a trifluoromethoxy group, a cyano group, a 4-R¹-(cycloalkyl) group, 4-R¹-(cycloalkenyl) group or a R¹-(O)m group in which R¹ is a C₁-C₁₂ alkyl group, a C₂-C₁₂ alkenyl group or a C₂-C₁₂ alkynyl group; and m is 0 or 1, which has an excellent anisotropy of refractive index and a low viscosity and is useful as a component of a liquid crystal composition.
式 [1] 的二苯基乙炔化合物:
其中 R 是 C₁-C₁₂ 烷基、C₂-C₁₂ 烯基或 C₂-C₁₆ 烷氧基烷基;X¹、X²、X³、X⁴、Y¹、Y²、Y³ 和 Y⁴ 相互独立地为-CH-基团、-CF-基团或氮原子;A 是氢原子、氟原子、三氟甲基、三氟甲氧基、氰基、4-R¹-(环烷基)基团、其中 R¹ 是 C₁-C₁₂ 烷基、C₂-C₁₂ 烯基或 C₂-C₁₂ 烷基;且 m 为 0 或 1,具有优异的折射率各向异性和低粘度,可用作液晶组合物的成分。