食品科学 ›› 2007, Vol. 28 ›› Issue (10): 252-254.

• 工艺技术 • 上一篇    下一篇

食用香料2-戊烯酸的合成研究

 谢建春, 孙宝国, 郑福平, 罗朝生   

  1. 北京工商大学化学与环境工程学院; 北京工商大学化学与环境工程学院 北京100037; 北京100037;
  • 出版日期:2007-10-15 发布日期:2011-11-22

Study on Synthesis of Flavor 2-Pentenoic Acid

 XIE  Jian-Chun, SUN  Bao-Guo, ZHENG  Fu-Ping, LUO  Chao-Sheng   

  1. School of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100037, China
  • Online:2007-10-15 Published:2011-11-22

摘要: 以丙醛和丙二酸为原料,哌啶为催化剂,采用Knoevenagel反应合成了食用香料2-戊烯酸反式构型,产率64.2%,其具有干酪味、淡烤香味。较佳合成工艺为:丙二酸与丙醛摩尔配比1:1.5,反应时间3.5h。产品结构通过质谱、红外光谱、核磁共振进行了确认。

关键词: 反-2-戊烯酸, Knoevenagel反应, 丙醛, 香料

Abstract: With propanal and malonate as reaction agents and piperidine as the catalyst, Knoevenagel reaction was used in the synthesis of flavor 2-pentenoic acid. The yield was 64.2%. The product, mainly in the (E) isomer, imparted cheese and weak roasted odors. The optimal reaction technology was the mole ratio of propanal to malonate in 1:1.5 with the reaction time of 3.5 h. The structure of 2-pentenoic acid was confirmed by IR, MS and 1H-NMR.

Key words: (E)-2-pentenoic acid, Knoevenagel reaction, propanal, flavor