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第 38 卷第 3 期Vol. 38 No. 3
2008 年 6 月Jun 2008

所屬欄目:有機合成原料

離子液體催化合成2-(4-乙基苯甲;┍郊姿
唐軍明 (湖南南天實(shí)業(yè)股份有限公司,湖南 湘潭 411103)
摘 要:研究了離子液體催化合成2-(4-乙基苯甲;┍郊姿。并對離子液體中[Bmim]Cl與三氯化鋁的摩爾比、原料配比、反應溫度和反應時(shí)間等工藝條件進(jìn)行了考察。較優(yōu)工藝條件為:n(AlCl3) ∶ n( [Bmim]Cl)=1 ∶ 3,n(離子液體) ∶ n(鄰苯二甲酸酐) ∶ n(乙苯)=1 ∶ 1 ∶ 1,反應溫度為50℃,反應時(shí)間為4 h,在此條件下,[Bmim]Cl-AlCl3催化鄰苯二甲酸酐的轉化率可達100%,目標產(chǎn)物2-(4-乙基苯甲;┍郊姿岬倪x擇性達97.14%,可避免使用有機溶劑。
關(guān)鍵詞:離子液體;;磻;苯酐;2-(4-乙基苯甲;┍郊姿
中圖分類(lèi)號:TQ244.63  文獻標識碼:A  文章編號:1009-9212(2008)03- 0051-03
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
作者簡(jiǎn)介:唐軍明(1969-),男,湖南道縣人,工程師,研究方向:精細化工合成。( E-mail:tangj666666@126.com)
收稿日期:2008-03-14
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