申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US05273680A1
公开(公告)日:1993-12-28
This invention relates to fluorinated oligophenyls of formula (I), in which a is 0 or 1 and in which the terminal substituents R.sup.1, R.sup.2 and R.sup.3 are each independently an alkyl or alkenyl residue each with up to 15 C atoms, optionally substituted by CN or by at least one halogen atom, and wherein one or more non adjacent CH.sub.2 groups of these residues may be replaced by --O--, --S--, --CO--, --O--CO--, --CO--O--, --O--CO--O-- or --C.tbd.C--, one of the residues R.sup.1 and R.sup.2 may also denote a group of formula (II), any one of the following pairs of lateral substituents are both fluorine: (A, B), (C, D), (D, E), (C, E), (B, C), (D, J), (D, K), (A, C), (C, J), (C', D'), (D', E), (D', A), (C', E), (C', A), (D', J'), (D', K'), (C', J'), (B, G), (A, G), all of the other lateral substituents being hydrogen or fluorine, and to their use as components of liquid crystalline compositions.
本发明涉及公式(I)的氟代寡苯,其中a为0或1,末端取代基R1、R2和R3各自独立地为含有最多15个C原子的烷基或烯基残基,选修地被CN或至少一个卤素原子取代,其中这些残基的一个或多个非相邻的CH2基团可以被替换为—O—、—S—、—CO—、—O—CO—、—CO—O—、—O—CO—O—或—C.tbd.C—,其中R1和R2中的一个也可以表示为公式(II)的一组,以下任意一对侧基取代物都是氟:(A,B),(C,D),(D,E),(C,E),(B,C),(D,J),(D,K),(A,C),(C,J),(C',D'),(D',E),(D',A),(C',E),(C',A),(D',J'),(D',K'),(C',J'),(B,G),(A,G),所有其他侧基都是氢或氟,并且作为液晶组分的使用。