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    • 10. 发明授权
    • Phenylpyrimidinecarboxylate derivative
    • 苯基嘧啶羧酸酯衍生物
    • US4874546A
    • 1989-10-17
    • US75657
    • 1987-07-20
    • Naoyuki YoshidaKisei KitanoTetsuya Ogawa
    • Naoyuki YoshidaKisei KitanoTetsuya Ogawa
    • C07D239/28C09K19/34
    • C07D239/28C09K19/3458C09K19/3469
    • A novel phenylprimidinecarboxylate derivative which, when used as a component of liquid crystal compositions, can raise the clearing point of the mesomorphic range of the liquid crystal compositions and/or increase the dielectric anisotrophy value of the compositions, and a liquid crystal compositions containing the derivative are provided, which derivative is expressed by the formula ##STR1## wherein X.sup.1 represents an alkyl or alkoxy each of 1-10 C; X.sup.2 represents a 4-substituted phenyl having an alkyl, of 1-10 C, F, Cl, Br or --CN at 4-position or a 3,4-disubstituted phenyl having f, Cl, Br or CN at 4-position and F, Cl or Br at 3-position; and either one of L or M represents .dbd.N-- and the other represents --C.dbd..
    • 一种新型的苯基三氨基甲酸酯衍生物,当用作液晶组合物的组分时,可以提高液晶组合物的介观范围的清除点和/或增加组合物的介电不均匀性值,以及含有该衍生物的液晶组合物 ,其中X 1表示1-10个碳原子的烷基或烷氧基, X2表示4-位的具有1-10C的烷基,位置上的F,Cl,Br或-CN的4-取代的苯基或在4-位具有f,Cl,Br或CN的3,4-二取代的苯基, F,Cl或Br在3位; L或M中的任一个表示= N-,另一个表示-C =。