论文编号:ZY040论文字数:7564,页数:29
摘 要：丁醚脲是一种新型硫脲杀虫，杀螨剂。丁醚脲对菜青虫、小绿叶蝉等多种害虫、害螨均有较好的防治效果。丁醚脲-脲是杀虫剂丁醚脲中的一种杂质。为了更好的的检测出丁醚脲中的丁醚脲-脲，制备高纯度的丁醚脲-脲作为参照物。本论文以2,6-二异丙基苯胺为原料，与溴反应制备4-溴-2,6-二异丙基苯胺；在氢氧化钾和氯化亚铜的作用下4-溴-2,6-二异丙基苯胺再与苯氧基置换得到4-苯氧基-2,6-二异丙基苯胺，利用减压蒸馏提纯4-苯氧基-2,6-二异丙基苯胺；将提纯的4-苯氧基-2,6-二异丙基苯胺依次与固体光气和叔丁胺反应生成N-叔丁基-N’-(2,6-二异丙基苯基-4’-苯氧基)尿素，即丁醚脲-脲，纯度为99.43%。
关键词：丁醚脲；丁醚脲-脲；2,6-二异丙基苯胺；固体光气
Abstract: Diafenthiuron was one new thiourea insecticide and miticide. Diafenthiuron can control and kill Pieris rapae, leafhopper and other pests, mites. Diafenthiuron-urea was an impurity in the preparation of Diafenthiuron. In order to detect Diafenthiuronur-ea in Diafenthiuron better. Prepared high-purity Diafenthiuron-urea as a reference. In this article, Diafenthiuron-urea was synthesized from 2,6–Diisopropylaniline. Prepared 4-bromo-2,6-Diisopropylaniline with bromine; 4-bromo-2,6-Diisopropylaniline was converted to 4-phenol-2,6–Diisopropylaniline by treatment with phenol, cuprous chloride and potassium hydroxide in xylene, and got the pure 4-phenol-2,6–Diisopropylaniline through vacuum distillation; Under the action of triphosgene and tert-butylamine, the pure 4-phenol-2,6–Diisopropylaniline can converted to N-tert-butyl-N’-(2,6-diisopropylphenyl- 4’-phenoxy) urea, also called Diafenthiuron–urea，a purity of 99.4%.
Keywords：Diafenthiuron; Diafenthiuron - urea; 2,6 - Diisopropylaniline; triphosgene
目 录
中文摘要I
英文摘要II
目录III
1. 绪论1
1.1 丁醚脲的简介1
1.2 丁醚脲-脲的简介5
2. 实验部分7
2.1 试剂和仪器7
2.2 实验合成8
3. 结果与讨论12
3.1 2,6-二异丙基苯胺的气相色谱分析12
3.2 4-溴-2,6-二异丙基苯胺的气相色谱分析14
3.3 4-苯氧基-2,6-二异丙基苯胺的气相色谱分析15
3.4 丁醚脲-脲的液相色谱分析17
3.5 丁醚脲-脲的红外光谱分析19
3.6 实验探讨21
4．总结与展望22
4.1 总结22
4.2 展望22
致谢23
参考文献24
丁醚脲-脲的制备工艺......