第 37 卷第 1 期 |  | Vol. 37 No. 1 | 2007 年 2 月 | Feb 2007 |
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所屬欄目:有機合成原料
相轉移催化合成1-羥基苯并三氮唑 |
唐鵬武,段正康,楊運泉
(湘潭大學(xué) 化工學(xué)院,湖南 湘潭 411105) |
摘 要:研究了在相轉移催化劑聚乙二醇(PEG)800存在下,鄰硝基氯苯和水合肼反應生成1-羥基苯并三氮唑的工藝過(guò)程。討論了催化劑種類(lèi)、原料摩爾比、反應溫度、反應時(shí)間、攪拌速度等因素對目的產(chǎn)品收率的影響,得出適合的操作條件為:n(鄰硝基氯苯) ∶ n(水合肼) ∶ n (PEG-800)=1 ∶ 4 ∶ 0.03、反應溫度110℃、反應時(shí)間5 h、攪拌速度500 r/min,產(chǎn)品收率達98.1 %。該合成方法具有工藝原料摩爾比小、反應時(shí)間短、操作簡(jiǎn)便、能耗小等優(yōu)點(diǎn)。 |
關(guān)鍵詞:1-羥基苯并三氮唑;相轉移催化;聚乙二醇;合成 |
中圖分類(lèi)號:TQ252.6 文獻標識碼:A 文章編號: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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作者簡(jiǎn)介:唐鵬武(1982-),男,湖南耒陽(yáng)人,碩士研究生,研究方向,有機精細化工。(E-mail:tangpengwu999@yahoo.com.cn)
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聯(lián) 系 人:段正康(1964-),男,教授,主要從事有機合成方面的研究。(E-mail:dzk0607@163.com)
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收稿日期:2006-11-17
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