| 二氢枯茗酸催化脱氢合成对异丙基苯甲酸的新方法 |
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| 引用本文： | 姜红宇,湛雪辉,张敏,周随安,李飞.二氢枯茗酸催化脱氢合成对异丙基苯甲酸的新方法[J].湖南城市学院学报(自然科学版),2009,18(1). |
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| 作者姓名： | 姜红宇 湛雪辉 张敏 周随安 李飞 |
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| 作者单位： | [1]湖南科技学院化学与生物系,湖南永州425100 [2]长沙理工大学化学与环境工程学院,长沙410076 |
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| 基金项目： | 国家自然科学基金资助课题(50874044);;湖南省科技创新环境建设项目资助课题(2008CK3044) |
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| 摘 要： | 采用5％Pd／C作为转移氢催化剂，原料二氢枯茗酸为氢给予剂，以工业双戊烯作为氢接受剂和溶剂。合成了对异丙基苯甲酸．考察了催化剂用量、反应时间和反应温度对反应的影响，确定了合成对异丙基苯甲酸的最佳反应条件：5％Pd／C用量为原料的5．3％（质量比）、反应时间20min、在回流温度下，对异丙基苯甲酸的收率可达90％．催化剂重复使用5次后活性是原来的89％．
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| 关 键 词： | 二氢桔茗酸 对异丙基苯甲酸 催化转移脱氢 Pd/C试剂 工业双戊烯 |
Improved Synthesis of p-Isopropylbenzoic Acid from Dihydrocumic Acid |
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| JIANG Hong-yu,ZHAN Xue-hui,ZHANG Min,ZHOU Sui-an,LI Fei.Improved Synthesis of p-Isopropylbenzoic Acid from Dihydrocumic Acid[J].Journal of Hunan City University:Natural Science,2009,18(1). |
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| Authors: | JIANG Hong-yu ZHAN Xue-hui ZHANG Min ZHOU Sui-an LI Fei |
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| Institution: | 1.Chemistry & Biological School;Hunan University of Science and Engineering;Yongzhou;Hunan 425100;2.Chemical & Environmental Engineering School;ChangSha Science & Technical University;ChangSha;Hunan 410076;China |
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| Abstract: | The p-Isopropylbenzoic acid was synthesized by catalytic transfer dehydrogenation with 5% Pd/C using dihydrocumic acid as materia1 and hydrogen offer,industrial dipentene as hydrogen acceptor and solvent,reacted directly under reflux condition.The effects of amount of 5%Pd/C,reaction time and temperature were investigated.The optimum conditions of the synthesis were determined as follows:mass ratio of 5%Pd/C to material the 5%,reaction time 10 min and at reflux temperature.The yield of p-isopropylbenzoic ac... |
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| Keywords: | dihydrocumic acid p-isopropylbenzoic acid catalytic transfer dehydrogenation Pd/C industrial dipentene |
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