| 第 34 卷第 4 期 |  | Vol. 34 No. 4 | | 2004 年 8 月 | Aug 2004 |
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所屬欄目：其它
α-呋喃丙烯酸合成工藝改進(jìn) |
| 廖德仲; 何節玉; 謝海龍; 滿(mǎn)麗琴(湖南理工學(xué)院化工系; 湖南岳陽(yáng)) |
| 摘 要：苯胺在糖醛和丙二酸的Knoevenagel反應中有較好的催化活性。在反應中加入稀釋劑苯,可提高收率6%。實(shí)驗確定的優(yōu)化條件如下:丙二酸∶糠醛∶苯胺∶吡啶∶苯=1.1∶1 0∶0 1∶2 2∶2 0(mol),反應溫度95℃,反應時(shí)間3h。優(yōu)化條件下α 呋喃丙烯酸的收率為98%。稀釋劑苯回收率約為95%。 |
| 關(guān)鍵詞：α-呋喃丙烯酸; 糠醛; 丙二酸; 苯胺; 苯; Knoevenagel縮合反應 |
| 中圖分類(lèi)號：TQ251.1 文獻標識碼：A 文章編號：1009-9212(2004)04-0069-02 |
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| The Improved Process for Synthesis of 3-(2-Franyl) acrylic Acid |
| LIAO De-zhong; HE Jie-yu; XIE Hai-long; MAN Li-qin （Department of Chemical Engineering; Hunan Institute of Science and Technology; Yueyang 414000; China） |
| Abstract：Aniline had good catlaytic performance in Knoevenagel condensation of furfural with malonic acid.Benzene was used as diluent, and the yield was increased 6%.The premium conditions were determined as folowing:the molar ratio of raw material is malonic acid∶furfural∶aniline∶pyridine∶benzene=1.1∶1.0∶0.1∶2.2∶2.0,reaction temperature 95?℃,reaction time 3?h.In the conditions, the yield of 3-(2-franyl) acrylic acid is 98%.Benzene could be recovered,and the recovery of benzene is about 95%. |
| Key words：3-（2-franyl）acrylic acid; furfural; malonic acid; aniline; benzene; knoevenagel condensation |
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收稿日期：2003-09-15
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