| 磺化硅胶催化合成2,4-滴丁酯 |
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| 引用本文： | 李书涛,李玉文,王俊.磺化硅胶催化合成2,4-滴丁酯[J].应用化工,2011,40(11). |
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| 作者姓名： | 李书涛 李玉文 王俊 |
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| 作者单位： | 1. 青岛农业大学化学与药学院,山东青岛,266109
2. 山东出入境检验检疫局,山东青岛,266001 |
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| 基金项目： | 国家自然科学基金，青岛农业大学博士基金 |
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| 摘 要： | 以2,4-二氯苯氧乙酸和正丁醇为原料,磺化硅胶为催化剂,催化合成除草剂2,4-二氯苯氧乙酸正丁酯(2,4-滴丁酯)。考察催化剂用量、原料配比及回流时间对反应的影响。结果表明,最佳反应条件为:催化剂用量为2,4-二氯苯氧乙酸质量的1.4%,n(正丁醇):n(2,4-二氯苯氧乙酸)=10:1,回流时间为1.0 h,2,4-二氯苯氧乙酸正丁酯的收率为98.7%。
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| 关 键 词： | 2 4-滴丁酯 催化合成 磺化硅胶 |
Catalytic synthesis of 2,4-D butyl ester by silica sulfuric acid |
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| LI Shu-tao,LI Yu-wen,WANG Jun.Catalytic synthesis of 2,4-D butyl ester by silica sulfuric acid[J].Applied chemical industry,2011,40(11). |
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| Authors: | LI Shu-tao LI Yu-wen WANG Jun |
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| Affiliation: | LI Shu-tao1,LI Yu-wen1,WANG Jun2(1.School of Chemistry and Pharmacy,Qingdao Agricultural University,Qingdao 266109,China,2.Shandong Entry-Exit Inspection and Quarantine Bureau,Qingdao 266001,China) |
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| Abstract: | Silica sulfuric acid was used as the catalyst for synthesis of 2,4-D butyl ester from 2,4-dichlorophenoxyacetic acid(2,4-D) and n-butyl alcohol.The effects of catalyst amounts,molar ratio of alcohol to acid and reaction time on the product yield was investigated.The optimum conditions were as follows:1.4% catalyst based on 2,4-dichlorophenoxyacetic acid,molar ratio of 2,4-dichlorophenoxyacetic acid to n-butyl alcohol 1∶ 10,and reaction time 1.0 h.Under the optimum conditions,the yield of 2,4-D butyl ester was 98.7%. |
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| Keywords: | 2 4-D butyl ester catalytic synthesis silica sulfuric acid |
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