文章以对三氟甲氧基溴苯和单乙二醇缩4，4′-双环己基二酮为起始原料,经格氏反应，脱水、氢化、脱保、转型、wittig反应、水解、转型和wittig反应，最终合成了液晶材料反-4-[反-4-(4-三氟甲氧基苯基)环己基]环己基-1-乙烯。其中脱水反应最佳溶剂选二甲苯，反应时间4h；氢化反应选Pd/C作催化剂；纯化后目标产物的纯度为99.5%(GC)，总收率约为27.8%,其结构经IR、1H NMR及MS确证。

Tans-4-[ trans-4-(4-trifluoromethoxyphenyl)cyclohexane]-cyclohexane-1-ethylene liquid crystal compound was synthesized from 4-(trifluoromethoxy)bromobenzene and 4,4′- dicyclohexanedione mono-ethylene ketal by Grignard reaction、dehydration、hydrogenation, deprotection, transconformation, witting reaction, hydrolization, transconformation and wittig reaction. the best catalyst was Pd/C; for dehydration, the best solvent was xylene, reaction time was 4h. The overall yield and purity of the target compound was about 27.8% and 99.5%(GC), the structure was characterized by IR,1H NMR and MS.