Synthesis of 4-Alkoxy-2-substituted-benzenethiols and Their Application to Thermotropic Liquid Crystals
作者:Hiroaki Okamoto、Jianwei Wu、Yuki Morita、Shunsuke Takenaka
DOI:10.1246/bcsj.75.175
日期:2002.1
A new synthetic method of 4-alkoxy-2-X-benzenethiols (X = H, halogens, CH3) has been established. In order to confirm the validity as a component of liquid crystal materials, some derivatives of S-(4-alkoxy-2-X-phenyl) 4-R-thiobenzoates (R = CnH2n+1O, CN, NO2, X = halogens, CH3) were prepared. Most of the thioesters exhibit a nematic phase, while the lateral substituents (X) tend to reduce the mesophase thermal stability as well as the melting point. The effect of lateral substituents on the mesomorphic properties is discussed.
建立了一种合成4-烷氧基-2-X-苯硫醇(X = H, 卤素, CH3)的新方法。为了确认其作为液晶材料的组分有效性,制备了一些S-(4-烷氧基-2-X-苯基) 4-R-硫代苯甲酸酯(R = CnH2n+1O, CN, NO2, X = 卤素, CH3)的衍生物。大多数硫代酯显示向列相,而侧链取代基(X)倾向于降低介晶相的热稳定性和熔点。讨论了侧链取代基对介晶性质的影响。