申请人:CHISSO CORPORATION
公开号:EP0597701A1
公开(公告)日:1994-05-18
Conjugated enyne compounds, which have superior characteristics as L.C. materials and are stable under conventional environments, have the formula:
wherein A is 1,4-phenylene or 1,4-cyclohexylene; B,C and D are 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, pyridine-2,5-diyl or 1,3-pyrimidine-2,5-diyl; L and M are covalent bond, 1,2-ethylene, oxycarbonyl, carbonyloxy, 1,2-ethenylene, 1,2-ethynylene, oxymethylene or methyleneoxy; n,m and l are 0 or 1; X and Z are H or F; R is fluoroalkyl, alkyl, alkoxy, alkoxyalkyl or alkenyl; Y is alkyl, alkoxy, cyano, halogen, cyanate, alkyl or alkoxy having at least one H replaced by halogen; when n is 0, L is covalent bond; when m or n is 0, M is covalent bond; and m, n and l are not simultaneously 0.
共轭炔化合物作为 L.C. 材料具有优异的特性,在常规环境下也很稳定,其化学式为
其中 A 是 1,4-亚苯基或 1,4-环己烯;B、C 和 D 是 1,4-亚苯基、1,4-环己烯、1,3-二氧六环-2,5-二基、吡啶-2,5-二基或 1,3-嘧啶-2,5-二基;L 和 M 是共价键、1,2-亚乙基、氧羰基、羰氧基、1,2-乙烯基、1,2-乙炔基、氧亚甲基或亚甲基氧;n、m 和 l 为 0 或 1;X 和 Z 为 H 或 F;R 为氟代烷基、烷基、烷氧基、烷氧基烷基或烯基;Y 为烷基、烷氧基、氰基、卤素、氰酸酯、至少有一个 H 被卤素取代的烷基或烷氧基;当 n 为 0 时,L 为共价键;当 m 或 n 为 0 时,M 为共价键;且 m、n 和 l 不同时为 0。