化工进展

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2, 4, 6–三甲基苯甲酸的合成

徐广宇;徐建兵;廖丽萍;周 伊;臧阳陵   

  1. 湖南师范大学化学化工学院; 湖南省化工研究院精细化工研究所
  • 出版日期:2007-03-25 发布日期:2007-03-25

Synthesis of 2, 4, 6-trimethylbenzoic acid

XU Guangyu;XU Jianbing;LIAO Liping;ZHOU Yi;ZANG Yangling   

  1. College of Chemistry and Chemical Engineering, Hunan Normal University;Department of Fine Chemicals, Hunan Research Institute of Chemical Industry
  • Online:2007-03-25 Published:2007-03-25

摘要: 考察了在以均三甲苯为原料、CO2和AlCl3为酰化剂经Friedel-Crafts酰基化反应、水解合成2, 4, 6-三甲基苯甲酸工艺过程中,物料配比、反应温度等反应条件对收率的影响,确定了适宜的反应条件和后处理条件。通过此合成工艺,产品的产率可达83.3%。

Abstract: In this paper 2, 4, 6-trimethylbenzoic acid was synthesized by carboxylation of mesitylene in carbon dioxide–AlCl3 system. To optimize reaction conditions, experimental variables including reaction temperature and molar ratio were studied. The results showed the yield was as high as 83.3% when the molar ratio of mesitylene and AlCl3 was 0.7∶1 at room temperature.

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