第 42 卷第 5 期 |  | Vol. 42 No. 5 | 2012 年 10 月 | Oct 2012 |
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所屬欄目:農藥及中間體
3,3-二甲基-4-戊烯酸甲酯合成方法的改進(jìn)及表征 |
廖艷芳,余慧群,莫友彬,周 海,彭初和
(廣西化工研究院,廣西 南寧 530001) |
摘 要:采用相模法以原乙酸三甲酯與3-甲基-2-丁烯醇為原料,經(jīng)過(guò)重排反應和酯交換反應,合成了除蟲(chóng)菊酯類(lèi)殺蟲(chóng)劑的重要中間體3,3-二甲基-4-戊烯酸甲酯。改進(jìn)相模的工藝更適應工業(yè)生產(chǎn),收率達到85.6%,產(chǎn)品純度達到99.2%。 |
關(guān)鍵詞:3,3-二甲基-4-戊烯酸甲酯;3-甲基-2-丁烯醇;原乙酸三甲酯;合成 |
中圖分類(lèi)號:TQ453.6 文獻標識碼:A 文章編號:1009-9212(2012)05-0014-03 |
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Improved Synthesis of 3,3-Dimethyl-4-pentenoic Acid Methyl Ester |
LIAO Yan-fang ,YU Hui-qun,MO You-bin,ZHOU Hai,PENG Chu-he
(Guangxi Research Institute of Chemical Industry,Nanning 530001,China) |
Abstract:3,3-Dimethyl-4-pentenoic acid methyl ester is an important intermediate for the synthesis of pyrethroids pesticides. It can be prepared using 3-methyl-2-buten-1-ol and trimethyl orthoacetate as the starting materials,through Claisen rearrangement and transesterification reaction(Sagami method). This method was improved for industrial production and the product was obtained in 85.5% yield with purity of 99.2%. |
Key words:3,3-dimethyl-4-pentenoic acid methyl ester;3-methyl-2-buten-1-ol;trimethyl orthoacetate;synthesis |
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基金項目:廣西自然科學(xué)基金重點(diǎn)項目(2010GXNSFD013020)。
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作者簡(jiǎn)介:廖艷芳(1980-),女,廣西桂林人,工程師,碩士,研究方向:有機合成及色譜分析。(E-mail:ff8015@163.com)
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收稿日期:2012-10-05
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