Isothiocyanate liquid crystal compound containing 2, 5-difluoro substituted benzene and synthesis method

The invention discloses an isothiocyanate liquid crystal compound containing 2, 5-difluoro substituted benzene and a synthesis method of the isothiocyanate liquid crystal compound. The structural general formula of the disclosed compound is shown as I, in the formula, R is alkyl or alkoxy with the carbon atom number of 1-10, alkenyl or alkenyloxy with the carbon atom number of 2-10, naphthenic base with the carbon atom number of 3-8 or alkyl containing naphthenic base substitution, and hydrogen on the carbon atom can be substituted by fluorine; z1 and Z2 are single bonds,-C = C-,-CH = CH-,-CF = CF-or-CH2CH2; ring A and ring B are benzene rings or cyclohexane or cyclohexene, wherein hydrogen on the benzene rings can be substituted by fluorine, chlorine, methyl and ethyl; n is equal to 0, 1 or 2. The liquid crystal compound has the advantages of wide nematic phase temperature interval, low viscosity and high birefringence. # imgabs0 # 本发明公开了一种包含2,5-二氟取代苯的异硫氰酸酯液晶化合物及其合成方法。所公开化合物的结构通式如Ⅰ所示，其中R为碳原子数为1～10的烷基或烷氧基、碳原子