| 第 44 卷第 4 期 |  | Vol. 44 No. 4 | | 2014 年 8 月 | Aug 2014 |
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所屬欄目：香精香料
固體酸催化的正辛醛二甲縮醛的合成研究 |
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王天義1，范一義1，王曉慶2，馮乙巳2
（1. 安徽華業(yè)香料股份有限公司， 安徽 安慶 246300； 2. 合肥工業(yè)大學(xué) 化學(xué)化工學(xué)院， 安徽 合肥 230009） |
| 摘 要：研究了以正辛醛和甲醇為起始原料，直接合成正辛醛二甲縮醛技術(shù)�？疾炝舜呋瘎�、帶水劑，以及反應溫度、反應時(shí)間對反應結果的影響。確定優(yōu)化的工藝條件：n（正辛醛）∶n（甲醇）=1∶2.4，反應溫度為85~90℃，反應時(shí)間為2 h，催化劑為負載型雜多酸催化劑H3O40PW12／TiO2，帶水劑為環(huán)己烷。在優(yōu)化條件下正辛醛二甲縮醛的平均收率為82.8 %，產(chǎn)品純度達98%以上。 |
| 關(guān)鍵詞：正辛醛；甲醇；正辛醛二甲縮醛；親核加成；固體酸 |
| 中圖分類(lèi)號：TS229 文獻標識碼：A 文章編號：1009-9212（2014）04-0062-04 |
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| Synthesis of n-Octyl Aldehyde Dimethyl Acetal Catalyzed by Solid Acid |
| WANG Tian-yi1, FAN Yi-yi1, WANG Xiao-qing2, FENG Yi-si2
(1. Anhui Huaye Spice Industry Co., Ltd. Anqing 246300, China; 2. College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China) |
| Abstract：The preparation of n-octyl aldehyde dimethyl acetal from n-octanal and methanol was studied, and the reaction conditions were optimized as following: the molar ratio of octanal to methanol was 1:2.4, the reaction temperature was 85~90℃, the reaction time was 2 h, the heteropoly acid catalyst was H3O40PW12/TiO2, the water-carrying agent was cyclohexane. Under these conditions the product was obtained in 82.8% yield. |
| Key words：n-octanal; methanol; n-octyl aldehyde dimethyl; nucleophilic addition; solid acid |
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作者簡(jiǎn)介：王天義（1971-），男，安徽安慶人，副研究員，研究方向：合成香料開(kāi)發(fā)（E-mail：wangtianyi@anhuihuaye.com）。
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收稿日期： 2014-07-0
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