| 溴化钾-浓硫酸法合成苄基溴 |
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| 引用本文： | 宋志国,王敏,姜恒,宫红.溴化钾-浓硫酸法合成苄基溴[J].工业催化,2008,16(1):48-50. |
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| 作者姓名： | 宋志国 王敏 姜恒 宫红 |
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| 作者单位： | 1.渤海大学科技实验中心，辽宁 锦州 121000； 2.渤海大学化学化工学院，辽宁 锦州 121000； 3.辽宁石油化工大学，辽宁 抚顺113001 |
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| 摘 要： | 溴化钾作为工业生产2-羟基-4-正辛氧基二苯甲酮的副产品，在浓硫酸存在的条件下，与苯甲醇进行反应合成苄基溴。考察了反应条件，确定较佳工艺为：溴化钾0.1 mol，苯甲醇0.08 mol，浓硫酸5 mL，水2.5 mL，回流反应4 h分离，收率高达94%。粗产品经气相色谱分析证明纯度较高，产品经IR和折光率进行了表征。
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| 关 键 词： | 催化化学 苄基溴 苯甲醇 溴化钾 |
| 文章编号： | 1008-1143（2008）01-0048-03 |
| 收稿时间： | 2007-09-12 |
| 修稿时间： | 2007年9月12日 |
Synthesis of benzyl bromide using potassium bromide and concentrated sulfuric acid method |
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| SONG Zhiguo,WANG Min,JIANG Heng,GONG Hong.Synthesis of benzyl bromide using potassium bromide and concentrated sulfuric acid method[J].Industrial Catalysis,2008,16(1):48-50. |
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| Authors: | SONG Zhiguo WANG Min JIANG Heng GONG Hong |
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| Affiliation: | 1.Science & Technology Experimental Center, Bohai University, Jinzhou 121000,Liaoning, China; 2.College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000, Liaoning, China; 3.Liaoning University of Petroleum & Chemical Technology, Fushun 113001, Liaoning, China |
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| Abstract: | Benzyl bromide was synthesized from potassium bromide, a by-product from synthesis of 2-hydroxy-4-n-octyloxybenzophenone (UV-531), and benzoic alcohol in the presence of concentrated sulfuric acid. The optimal condition was obtained as follows: n(potassium bromide)=0.1 mol, n(benzoic alcohol)=0.08 mol, V(concentrated sulfuric acid)=5 mL, V(H2O)=2.5 mL, reflux for 4 h. Yield of up to 94%.was obtained. Raw product was analyzed by GC and almost no by-product was detected. The pure product was characterized by IR and index of refraction. |
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| Keywords: | catalytic chemistry benzyl bromide benzoic alcohol potassium bromide |
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