液晶材料反-4-[反-4-(4-三氟甲氧基苯基)环己基]环己基-1-乙烯的合成  

The Synthesis of Liquid Crystal Tans-4-[trans-4-(4-trifluoromethoxyphenyl)cyclohexane]-cyclohexane-1-ethylene

作　　者：班全志[1] 钱家盛[1] 杭德余[1] 姜天孟 田会强 

机构地区：[1]安徽大学化学化工学院,安徽合肥230039 [2]北京八亿时空液晶材料有限公司,北京100201

出　　处：《现代显示》2010年第7期31-35,共5页Advanced Display

摘　　要：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、1HNMR及MS确证。Tans-4-[trans-4-（4-trifluoromethoxyphenyl ） cyclohexaneJ-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/R,^1H NMR and MS.

关 键 词：反-4-[反-4-(4-三氟甲氧基苯基)环己基]环己基-1-乙烯 合成 液晶 转型 

分 类 号：TN141.9[电子电信—物理电子学]