A convenient synthesis of ferroelectric liquid crystals bearing the trifluoromethyl group
作者:Tomoya Kitazume、Sadanori Kaneko、Takashi Yamazaki、Shoji Watanabe
DOI:10.1016/s0022-1139(00)80027-5
日期:1993.2
A practical synthetic route to a series of (R)- or (S)-(1-trifluoromethyl)alkyl 4-hydroxybenzoateshas been developed. These materials were prepared by the reaction of p-hydroxybenzoic acid with (R)- or (S)-1-(trifluoromethyl)alkanols in the presence of p-toluenesulfonic acid under reflux conditions. Further reaction with the acid chloride of4′-alkoxybiphenyl-4-carboxylic acid gave the desired liquid
已开发出一种实用的合成路线,以合成一系列的(R)-或(S)-(1-三氟甲基)烷基4-羟基苯甲酸酯。这些物质是通过在对甲苯磺酸存在下,在回流条件下使对羟基苯甲酸与(R)-或(S)-1-(三氟甲基)链烷醇反应而制备的。与4'-烷氧基联苯-4-羧酸的酰氯进一步反应,得到所需的液晶。