第 37 卷第 3 期 |  | Vol. 37 No. 3 | 2007 年 6 月 | Jun 2007 |
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所属栏目:农药及中间体
芳基吡唑腈的合成工艺研究 |
陈 震,曹晓群,王玉民,张昌军,林晓辉
(泰山医学院 化学与化学工程学院,山东 泰安 271016) |
摘 要:以2,6-二氯-4-三氟甲基苯胺和2,3-二氰基丙酸乙酯为原料合成了氟虫腈主要中间体芳基吡唑腈。研究确定的关环反应的小试优惠条件为:18 g偶氮中间体溶于40 mL二氯甲烷,再加浓氨水30 mL,于10℃下搅拌3 h。采用该工艺路线操作简单,易于工业化,且减少了废酸的处理和高毒性试剂的使用,收率达91.4%。 |
关键词:氟虫腈;芳基吡唑腈;合成;杂环 |
中图分类号:TQ252.1 文献标识码:A 文章编号:1009-9212(2007)03- 0030 -02 |
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Synthesis of N-Phenylpyrazolecarbonitrile |
CHEN Zhen,CAO Xiao-qun, WANG Yu-min,ZHANG Chang-jun, LIN Xiao-hui
(Department of Chemistry and Chemical Engineering Taian Medical University,Taian 271016,China) |
Abstract:N-Phenylpyrazolecarbonitrile,an important intermediate of insecticide fipronil,was synthesized from 2,6-dichloro-4-trifluoromethylaniline and 2,3-dicyanopropionate . The appropriate reaction conditions are found as follows:30 mL of aqueous ammonia was added to a mixture of 18 g unpurified azo intermediate in 40 mL dichloromethane,and the mixture was agitated at 10℃ for 3 hours. The new method has a characteristic of simple operation,applicable industrialization,low waste acid amount less use of high toxicity reagents. |
Key words:fipronil;N-phenylpyrazolecarbonitrile;synthesis;heterocyclic |
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基金项目:泰安市科技发展计划项目(20061023)。
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作者简介:陈 震(1976-),男,安徽巢湖人,讲师,硕士,主要从事精细化学品合成研究。(E-mail:1976cz@163.com)
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联 系 人:曹晓群,教授,主要从事有机化学教学和科研工作。(E-mail xqcao@tsmc.edu.cn)
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收稿日期:2007-04-29
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