Liquid crystals (LCs) containing a trifluoromethylamino group are prepared by the cross-coupling reaction of p-bromo-substituted-(hetero)aryl(trifluoromethyl)amines that are derived from the corresponding dithiocarbamates through oxidative desulfurization–fluorination. The novel LCs are shown to exhibit mainly a smectic phase over a wide range of temperatures. Their electro-optical properties as a component of nematic LCs are compared with those of the corresponding methylamines.
含三
氟甲基
氨基团的液晶(LCs)是通过 p-
溴取代的(杂)芳基(三
氟甲基)胺与相应的二
硫氨基甲酸酯经过氧化脱
硫–
氟化反应的交叉偶联反应制备的。新型液晶在较宽的温度范围内主要表现出层状相。它们作为向列相液晶的组成部分,其电光性能与相应的甲基胺进行了比较。