第 47 卷第 2 期 | | Vol. 47 No. 2 | 2017 年 4 月 | Apr 2017 |
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所属栏目:农药及中间体
3-甲氧基丙烯酸甲酯的合成工艺研究 |
张革放1,2,3,胡志彬2,3*,李谦和1,陈 明2,3,王 宇2,3,虞孝云4,柳爱平1,2
(1. 湖南师范大学 化学化工学院,湖南 长沙 410006;2. 湖南化工研究院有限公司 国家农药创制工程技术研究中心,湖南 长沙 410014;3. 农用化学品湖南省重点实验室,湖南 长沙 410014;4. 湖南海利常德农药化工有限公司,湖南 常德 415000) |
摘 要:以四氯化碳和乙烯基乙醚为原料,在引发剂作用下发生自由基加成反应制备1,1,1,3-四氯-3-乙氧基丙烷(以下简称丙烷化合物),丙烷化合物与甲醇回流得到3,3-二甲氧基丙酸甲酯,然后在裂解催化剂的作用下裂解为3-甲氧基丙烯酸甲酯。优化工艺条件为:催化剂为偶氮二异丁腈/间氯过氧苯甲酸,n(乙烯基乙醚) ∶ n(四氯化碳) ∶ n(偶氮二异丁腈) ∶ n(间氯过氧苯甲酸)=1 ∶ 1.6 ∶ 0.001 6 ∶ 0.001 6,反应温度为68℃,反应时间为6 h;裂解反应所用催化剂为对甲苯磺酸。3步反应总收率为67.7%(以乙烯基乙醚计),含量为98.5%。 |
关键词:四氯化碳;自由基加成;3,3-二甲氧基丙酸甲酯 |
中图分类号:TQ225.24 文献标识码:A 文章编号:1009-9212(2017)02-0025-04 |
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Synthesis of Methyl 3-Methoxyacrylate |
ZHANG Ge-fang1,2,3, HU Zhi-bing2,3*, Ll Qian-he1, CHENG Ming2,3, WANG Yu2,3, YU Xiao-yun4, LIU Ai-ping1,2
(1. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410006, China; 2. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry Co., Ltd., Changsha 410014, China; 3. Hunan Province Key Laboratory for Agrochemicals, Changsha 410014, China; 4. Hunan Haili Changde Pesticide Chemical Industry Co., Ltd., Changde 415000, China) |
Abstract:Methyl 3-methoxyacrylate was pyrolyzed by methyl 3,3-dimethoxy-propionate, which was successfully synthesized from the reflux of 1,1,1,3-tetrachloro-3-ethoxy-propane in methanol. 1,1,1,3-tetrachloro-3-ethoxy-propane was prepared using vinyl ether and carbon tetrachloride as the raw materials, AIBN and 3-chloroperbenzoic acid as catalysts. The optimum conditions for synthesis of 1,1,1,3-tetrachloro-3-ethoxypropane were as followings: n(vinyl ether):n(carbon tetrachloride):n(AIBN):n(3-chloroperbenzoic acid) was of 1:1.6:0.0016:0.0016; reaction temperature was of 68℃; reaction time was of 6 h; the cracking catalyst was p-toluenesulfonic acid. The overall yield of the target compound reached 67.7% with a purity of 98.5%. |
Key words:carbon tetrachloride; free radical addition; intermediates; Synthesis; methyl 3,3-dimethoxypropionate |
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基金项目:国家自然科学基金(21572050)。
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作者简介:张革放(1993-),男,湖南益阳人,硕士研究生,研究方向:有机合成。
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联 系 人:胡志彬,博士,研究方向:有机合成(E-mail:gushanfox@163.com)
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收稿日期:2017-04-10
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