第 43 卷第 5 期 |  | Vol. 43 No. 5 | 2013 年 10 月 | Oct 2013 |
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所屬欄目:有機合成原料
三光氣“一鍋法”合成異氰酸酯丙烯酸乙酯 |
易 純,葉龍飛,朱靈龍,鐘為慧*
(浙江工業(yè)大學(xué) 藥學(xué)院, 浙江 杭州 310014) |
摘 要:以乙醇胺鹽酸鹽(2)為原料,與丙烯酰氯進(jìn)行酯化反應制得丙烯酸氨基乙酯鹽酸鹽(3),中間體無(wú)需分離,在三乙胺作用下,經(jīng)三光氣羰基化反應得到目標產(chǎn)物異氰酸酯丙烯酸乙酯(1,AOI)?疾炝朔磻獪囟、反應時(shí)間、反應物配比對反應的影響,得出的優(yōu)化反應條件為:n (乙醇胺鹽酸鹽)∶n(丙烯酰氯)∶n(三乙胺)∶n(三光氣)=1∶1.2∶3.0∶0.45,第一步反應溫度為50℃,反應時(shí)間為5 h;第二步反應溫度為80℃,反應時(shí)間為3 h,在該條件下反應總收率為72.5%,GC純度 99.5%。 |
關(guān)鍵詞:異氰酸酯丙烯酸乙酯;三光氣;一鍋法 |
中圖分類(lèi)號:TQ314.2 文獻標識碼:A 文章編號:1009-9212(2013)05-0042-04 |
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One-pot Synthesis of 2-Isocyanatoethyl Acrylate from Triphosgene |
YI Chun,YE Long-fei,ZHU Ling-long,ZHONG Wei-hui*
(College of Pharmaceutical Sciences,Zhejiang University of Technology,Hangzhou 310014,China) |
Abstract:An efficient synthesis of 2-isocyanatoethyl acrylate (1,AOI)from 2-aminoethanol hydrochloride (2)was developed. Reaction of 2-aminoethanol hydrochloride with acryloyl chloride afforded 2-aminoethyl acrylate hydrochloride(3),which was further reacted with triphosgene without separation to produce the target product 2-isocyanatoethyl acrylate(1). Various factors including reaction temperature,reaction time and molar ratio of raw materials were studied. The optimized reaction conditions were as follows:n(2-aminoethanol hydrochloride)∶n(acryloyl chloride)∶n(triethylamine)∶n(triphosgene)=1∶1.2∶3.0∶0.45,the first step reaction temperature was 50℃ and reaction time was 5 h,the second step reaction temperature was 80℃ and reaction time was 3 h. Under the optimal conditions,the toverall yield of 1 was 72.5% with 99.5% purity. |
Key words:2-isocyanatoethyl acrylate;triphosgene;one-pot |
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基金項目:國家自然科學(xué)基金資助項目(21076194 & 21276238)。
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作者簡(jiǎn)介:易 純(1989-),男,江西宜春人,碩士研究生,研究方向:藥物合成。
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聯(lián) 系 人:鐘為慧,教授,研究方向:主要從事藥物及中間體的綠色合成方法及工藝研究。(E-mail:weihuizhong@zjut.edu.cn)
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收稿日期: 2013-10-2
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