第 38 卷第 3 期 | ![](image2/wentou.gif) | Vol. 38 No. 3 | 2008 年 6 月 | Jun 2008 |
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所属栏目:有机合成原料
离子液体催化合成2-(4-乙基苯甲酰基)苯甲酸 |
唐军明
(湖南南天实业股份有限公司,湖南 湘潭 411103) |
摘 要:研究了离子液体催化合成2-(4-乙基苯甲酰基)苯甲酸。并对离子液体中[Bmim]Cl与三氯化铝的摩尔比、原料配比、反应温度和反应时间等工艺条件进行了考察。较优工艺条件为:n(AlCl3) ∶ n( [Bmim]Cl)=1 ∶ 3,n(离子液体) ∶ n(邻苯二甲酸酐) ∶ n(乙苯)=1 ∶ 1 ∶ 1,反应温度为50℃,反应时间为4 h,在此条件下,[Bmim]Cl-AlCl3催化邻苯二甲酸酐的转化率可达100%,目标产物2-(4-乙基苯甲酰基)苯甲酸的选择性达97.14%,可避免使用有机溶剂。 |
关键词:离子液体;酰化反应;苯酐;2-(4-乙基苯甲酰基)苯甲酸 |
中图分类号:TQ244.63 文献标识码:A 文章编号:1009-9212(2008)03- 0051-03 |
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Ionic Liquid as Catalyst for Synthesis 2-(4-Ethylbenzoyl)benzoic Acid |
TANG Jun-ming
(Hunan Nantian Co. Ltd.,Xiangtan 411105,China) |
Abstract:The effects of reaction conditions such as the proper proportion between [Bmim]Cl and AlCl3 in the ionic liquid,the molar ratio of ethylbenzene and phthalic anhydride,temperature,and reaction time on synthesis of 2-(4-ethylbenzoyl)benzoic acid were investigated. When [Bmim]Cl-AlCl3 was used as the catalyst,phthalic anhydride conversion of 100% and 2-(4-ethylbenzoyl)benzoic acid yield of 97.14% can be obtained under the conditions:the component of the ionic liquid was:n(AlCl3) ∶ n([Bmim]Cl)=1 ∶ 3,n(ionic liquid) ∶ n(ethylbenzene) ∶ n(phthalic anhydride) = 1 ∶ 1 ∶ 1,the reaction temperature was 50℃ and the reaction time was 4 h. The process can react without solvents. |
Key words:ionic liquid;acylation;ethylbenzene;2-(4-ethylbenzoyl)benzoic acid |
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作者简介:唐军明(1969-),男,湖南道县人,工程师,研究方向:精细化工合成。( E-mail:tangj666666@126.com)
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收稿日期:2008-03-14
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