第 39 卷第 6 期 |  | Vol. 39 No. 6 | 2009 年 12 月 | Dec 2009 |
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所屬欄目:有機合成原料
微波促進(jìn)下一步法合成咪唑型離子液體研究 |
孫孟展
(浙江醫藥高等專(zhuān)科學(xué)校 藥學(xué)系,浙江 寧波 315100) |
摘 要:在微波輻射下,甲基咪唑與1-氯丁烷、四氟硼酸鈉3組分一步合成得到離子液體[Bmim]BF4,結構經(jīng)1H NMR,IR表征。用單因素實(shí)驗法得到了適宜反應條件:微波功率225 W,反應時(shí)間15 min,n(1-氯丁烷) ∶ n(四氟硼酸鈉) ∶ n(甲基咪唑)=1.1 ∶ 1.5 ∶ 1。此條件下,離子液體[Bmim]BF4的收率為92.3%。該方法后處理簡(jiǎn)單,收率高,反應時(shí)間短,且采用一步法合成,簡(jiǎn)化了工藝過(guò)程和操作步驟,有利于工業(yè)化生產(chǎn)。 |
關(guān)鍵詞:微波輻射; [Bmim]BF4離子液體; 一步法; 合成 |
中圖分類(lèi)號:O643 文獻標識碼:A 文章編號:1009-9212(2009)06- 0037-03 |
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One-step Synthesis of Imidazole-based Ionic Liquids under Microwave Irradiation |
SUN Meng-zhan
(Zhejiang Pharmaceutical College,Ningbo 315100, China) |
Abstract:Ionic liquid [Bmim]BF4 was synthesized from 1-methyl-1H-imidazole,1-chlorobutane and NaBF4 under microwave irradiation in a solvent free system in one step. The product was confirmed with 1H NMR and IR. The results showed the optimal reaction conditions as follows: microwave power 225 W,reaction time 15 min,n(1-chlorobutane) ∶ n(NaBF4) ∶ n(N-methylimidazolium)=1.1 ∶ 1.5 ∶ 1. The reaction afforded the product in 92.3% yield. The advantages of this process include short reaction time,simple work-up operation,low cost and easy to be scaled up. |
Key words:microwave irradiation;[Bmim]BF4 ionic liquid;one-step method;synthesis |
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作者簡(jiǎn)介:孫孟展(1981-),男,浙江寧波人,講師,碩士,從事藥物中間體的綠色合成研究。(E-mail:sunmz@mail.zjpc.net.cn)
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收稿日期:2009-10-17
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