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4′-(6-溴己氧基)联苯-4-甲酸甲酯的合成
Synthesis of Methyl 4′-(6-Bromohexyloxy) diphenyl-4-carboxlate
【摘要】 4′ 羟基联苯 4 甲酸与甲醇反应,合成了4′ 羟基联苯 4 甲酸甲酯。后者与1,6 二溴己烷反应合成了目标化合物4′ (6 溴己氧基)联苯 4 甲酸甲酯,反应工艺条件为:以无水乙醇为溶剂,n(4′ 羟基联苯 4 甲酸甲酯)∶n(碳酸钾)∶n(1,6 二溴己烷)=1∶1 5∶3,80℃反应8h,收率达60 8%。两步总收率57 6%。目标化合物经IR,1HNMR和元素分析确证了分子结构。
【Abstract】 4′-Hydroxybiphenyl-4-carboxylic acid reacted with methanol to form methyl 4′-hydroxybiphenyl-4-carboxylate(Ⅰ).Ⅰ reacted with 1,6-dibromohexane(Ⅱ) to give methyl 4′-(6-bromohexyloxy) diphenyl-4-carboxlate(Ⅲ).Choosing ethyl alcohol as solvent,when n(Ⅰ)∶n(K2CO3)∶n(Ⅱ)=1.0∶1.5∶3.0,the second reaction was carried out at 80 ℃ for 8 h to give Ⅲ in 60.8% yield.Total yield of two steps was 57.6%.The structure of Ⅲ was confirmed by IR,1HNMR and elementary analysis.
【关键词】 4′-羟基联苯-4-甲酸;
4′-(6-溴己氧基)联苯-4-甲酸甲酯;
高分子铁电液晶;
【Key words】 4′-hydroxybiphenyl-4-carboxylic acid; methyl 4′-(6-bromohexyloxy) diphenyl -4-carboxlate; ferroelectric liquid crystalline polymer;
【Key words】 4′-hydroxybiphenyl-4-carboxylic acid; methyl 4′-(6-bromohexyloxy) diphenyl -4-carboxlate; ferroelectric liquid crystalline polymer;
【基金】 安徽省教育厅自然科学基金项目(2003kj018)
- 【文献出处】 精细化工 ,Fine Chemicals , 编辑部邮箱 ,2004年09期
- 【分类号】O625.66
- 【被引频次】3
- 【下载频次】178