第 37 卷第 6 期 | | Vol. 37 No. 6 | 2007 年 12 月 | Dec 2007 |
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所属栏目:医药及中间体
超声波与相转移催化合成扁桃酸 |
刘志雄
(吉首大学 化学化工学院 湖南 吉首市 416000) |
摘 要:以超声波、相转移催化法合成了扁桃酸,同时采用正交设计法确定了反应优惠条件:以TBAB作相转移催化剂、原料配比n(苯甲醛) ∶ n(氯仿)=1 ∶ 2.5、40%的氢氧化钠、超声波功率160 W、反应温度60℃。优惠条件下收率达到87.6%。由于采用低浓度的氢氧化钠,给生产操作带来了方便。 |
关键词:扁桃酸;超声波;相转移催化;季铵盐;正交设计法 |
中图分类号:TQ465.1 文献标识码:A 文章编号:1009-9212(2007)06- 0033-03 |
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Preparation of Mandelic Acid Promoted by Ultrasonic Phase Transfer Catalyst |
LIU Zhi-xiong
(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China) |
Abstract:Mandelic acid was synthesized by the phase transfer catalyst and ultrasound. The reaction paraments were optimized by orthogonal design method. The optimun conditions were as follows:phase transfer catalyst was TBAB,mole ratio of C6H5CHO and CHCl3 was 1 ∶ 1.25,ultrasonic power 160 W ,reaction temperature 60℃ .Under the conditions the yield of 87.65% is achieved. Using low concentration of NaOH brought convenience to the production operation. |
Key words:mandelic acid;ultrasonic;phase transfer catalysis;quaternary ammonium salt;orthogonal design method |
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作者简介:刘志雄(1973-),男,湖南新化人,讲师,硕士,从事化学工程和工艺的教学与研究,研究方向:医药中间体合成工艺研究。(E-mail:liuzhxi@sina.com)
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收稿日期:2007-09-27
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