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发明公开
CN102533277A 多氟多环类液晶化合物及其制备方法与应用 有权

多氟多环类液晶化合物及其制备方法与应用
摘要：
本发明公开了一种多氟多环类液晶化合物及其制备方法与应用。该多氟多环类液晶化合物，其结构通式如式I所示。其制备方法包括：1)将式III1所示1-Y2-2-Y1-4-RA-苯与正丁基锂进行负离子化反应，保持温度再加入碘进行碘化反应，1小时后升温至室温反应2小时，得到式IV1所示2-Y2-3-Y1-5-RA-碘苯；2)在pH值为8-14和Pd(PPh3)4作为催化剂存在的条件下，将式IV1所示2-Y2-3-Y1-5-RA-碘苯与式IV2所示2-Y3-3-Y4-5-RB-苯硼酸进行Suzuki交叉偶联反应，得到所述化合物。该液晶化合物，核磁检测正确，具有Z性结构，可以作为液晶显示材料和液晶单体使用，具有重要的应用价值。
摘要（英）：

The invention discloses a poly-fluorine polycyclic liquid crystal compound as well as a preparation method and application of the liquid crystal compound. The poly-fluorine polycyclic liquid crystal compound has a structural formula indicated in formula I. The preparation method comprises the steps of: 1) carrying out anion reaction on 1-Y2-2-Y1-4-RA-benzene indicated in formula III1 and n-butyl lithium, maintaining the temperature and adding iodine to carry out iodination reaction, and 1h later, increasing the temperature to room temperature and carrying out reaction for 2h to obtain 2-Y2-3-Y1-5-RA-iodobenzene indicated in formula IV1; and 2) under a condition that the pH value is 8-14 and with the presence of Pd(PPh3)4 which serves as a catalyst, carrying out Suzuki cross-coupling reaction on the 2-Y2-3-Y1-5-RA-iodobenzene indicated in the formula IV1 and 2-Y3-3-Y4-5-RB-benzeneboronic acid indicated in formula IV2 to obtain the compound. The liquid crystal compound has correct nuclear magnetic detection and a Z-shaped structure, can be used as a liquid crystal display material and a liquid crystal monomer, and has important application value.

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