| 3,3’,4,4-联苯四甲酸合成中偶联工艺的研究 |
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| 引用本文： | 李永真,陈玉红,王贵珍,孙娜,邸青.3,3’,4,4-联苯四甲酸合成中偶联工艺的研究[J].绝缘材料,2011,44(5):24-26. |
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| 作者姓名： | 李永真 陈玉红 王贵珍 孙娜 邸青 |
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| 作者单位： | 河北化工医药职业技术学院,石家庄,050026 |
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| 基金项目： | 河北省教育厅项目(Z2010239) |
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| 摘 要： | 以苯酐为原料经氯化、脱氯偶联两步反应合成了3,3’,4,4’-联苯四甲酸,研究了中间产物4-氯邻苯二甲酸(4-CPA)脱氯偶联生成3,3’,4,4’-联苯四甲酸的偶联反应工艺条件,并通过红外、液相色谱等对产物进行了表征.结果表明:Pd/C催化剂的用量及钯含量、氢氧化钠加入量、温度对产率及纯度影响较大,偶联反应最佳工艺条...
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| 关 键 词： | 聚酰亚胺 3 3’ 4 4’-联苯四甲酸 4-氯-邻苯二甲酸 偶联 |
Coupling Reaction Conditions of 3,3',4,4'-Biphenyltetracarboxylic Acid |
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| Li Yongzhen
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Chen Yuhong
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Wang Guizhen
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Sun Na
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Di Qing.Coupling Reaction Conditions of 3,3',4,4'-Biphenyltetracarboxylic Acid[J].Insulating Materials,2011,44(5):24-26. |
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| Authors: | Li Yongzhen Chen Yuhong Wang Guizhen Sun Na Di Qing |
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| Affiliation: | Li Yongzhen,Chen Yuhong,Wang Guizhen,Sun Na,Di Qing(Hebei Chemical and Pharmaceutical College,Shijiazhuang 050026,China) |
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| Abstract: | 3,3',4,4'-biphenyltetracarboxylic acid(s-BPTA) was prepared with phthalic anhydride as raw material through two-step reaction of chloridization and dechloridization coupling,and thecoupling reaction condition of the intermediate 4-chloro-phthalic acid(4-CPA) was studied.The product s-BPTA was analyzed by FTIR and liquid chromatography.The results show that the Pd/C catalyst and Pd content,the sodium hydroxide content and temperature have great influence on the yieldand purity of the s-BPTA.The optimum coupl... |
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| Keywords: | polyimide 3 3' 4 4'-biphenyltetracarboxylic acid 4-chloro-phthalic acid coupling |
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