第 37 卷第 1 期 | | Vol. 37 No. 1 | 2007 年 2 月 | Feb 2007 |
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所属栏目:有机合成原料
相转移催化合成1-羟基苯并三氮唑 |
唐鹏武,段正康,杨运泉
(湘潭大学 化工学院,湖南 湘潭 411105) |
摘 要:研究了在相转移催化剂聚乙二醇(PEG)800存在下,邻硝基氯苯和水合肼反应生成1-羟基苯并三氮唑的工艺过程。讨论了催化剂种类、原料摩尔比、反应温度、反应时间、搅拌速度等因素对目的产品收率的影响,得出适合的操作条件为:n(邻硝基氯苯) ∶ n(水合肼) ∶ n (PEG-800)=1 ∶ 4 ∶ 0.03、反应温度110℃、反应时间5 h、搅拌速度500 r/min,产品收率达98.1 %。该合成方法具有工艺原料摩尔比小、反应时间短、操作简便、能耗小等优点。 |
关键词:1-羟基苯并三氮唑;相转移催化;聚乙二醇;合成 |
中图分类号:TQ252.6 文献标识码:A 文章编号:1009-9212(2007)01- 0064 - 03 |
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Synthesis of 1-Hydroxy Benzotriazole by Phase-transfer Catalysis |
TANG Peng-wu,DUAN Zheng-kang,YANG Yun-quan
(Department of Chemical Engineering,Xiangtan University,Xiangtan 411105,China) |
Abstract:1-Hydroxy benzotriazole was synthesized by O-chloronitrobenzene and hydrazine hydrate using PEG-800 as phase transfer catalyst. Various reaction factors influencing the yield of the target product were discussed. The optimum reaction conditions were as follows : the molar ratio of O-chloronitrobenzene, hydrazine hydrate to PEG-800 was 1 ∶ 4 ∶ 0.03, the speed of agitator 500 r/min,the reaction time 5 h,the reaction temperature 110℃. The yield reached 98.1% under these optimum conditions. |
Key words:1-hydroxy benzotriazole;phase transfer catalysis;polyethylene glycol;synthesis |
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作者简介:唐鹏武(1982-),男,湖南耒阳人,硕士研究生,研究方向,有机精细化工。(E-mail:tangpengwu999@yahoo.com.cn)
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联 系 人:段正康(1964-),男,教授,主要从事有机合成方面的研究。(E-mail:dzk0607@163.com)
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收稿日期:2006-11-17
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