| 对羟基苯甲酸乙酯的合成 |
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| 引用本文： | 刘静,王云芳.对羟基苯甲酸乙酯的合成[J].渭南师范学院学报,2005,20(5):5-7. |
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| 作者姓名： | 刘静 王云芳 |
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| 作者单位： | 1. 咸阳师范学院,化学系,陕西,咸阳,712000;陕西科技大学,化工学院,陕西,咸阳,712000
2. 咸阳师范学院,化学系,陕西,咸阳,712000 |
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| 基金项目： | 咸阳师范学院自然科学基金重点资助项目(04XSYK005) |
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| 摘 要： | 研究了以对羟基苯甲酸、乙醇为原科,氨基磺酸为催化剂,合成对羟基苯甲酸乙酯,并讨论了催化酯化的影响因素.实验结果表明,磺酸是合成对羟基苯甲酸乙酯的良好催化剂,易回收,可重复使用.最佳工艺条件为:酸醇物质的量比为1∶4,催化剂用量为反应物料总质量的10.3%,反应时间为3h,回流温度,此条件下,产品收率达90.38%.
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| 关 键 词： | 对羟基苯甲酸乙酯 催化剂 合成 氨基磺酸 |
| 文章编号： | 1009-5128（2005）05-0005-03 |
| 收稿时间： | 2005-04-13 |
| 修稿时间： | 2005年4月13日 |
Synthesis for Ethyl p-Hyclroxybenzonate |
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| LIU Jing,WANG Yun-fang.Synthesis for Ethyl p-Hyclroxybenzonate[J].Journal of Weinan Teachers College,2005,20(5):5-7. |
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| Authors: | LIU Jing WANG Yun-fang |
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| Institution: | 1. Department of Chemistry. Xianyang Teachers College. 712000 Xianyang, China;2 .School of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, 712000 Xianyang, China |
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| Abstract: | The preparation of ethyl p-hyclroxybenzonate by the reaction of p-hyclroxybenzonate acid with ethanol,by using aminosulfonic acid as a catalyst,and its various factors that effect the esterification have been discussed.It proves that the catalyst is an excellent catalyst for the synthesis of ethyl p-hyclroxybenzonate,feasible to be used repeatedly,and less pollution to environment.The optimum reaction conditions are the molar of the acid to ethanol 1:4,the amount of catalyst to the total 0.103:1(the reaction time: 3 hours).With reflux temperature,under these conditions,product recovery rate is 90.38% |
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| Keywords: | ethyl p-hyclroxybenzonate catalyst synthesis aminosulfonic acid |
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