化工进展 ›› 2017, Vol. 36 ›› Issue (01): 324-328.DOI: 10.16085/j.issn.1000-6613.2017.01.041

• 生物与医药化工 • 上一篇    下一篇

Pd/Al2O3-Novozyme 435动态动力学拆分1,1,1-三氟异丙胺

蒋成君1,2, 徐国明3, 袁慎峰1   

  1. 1 浙江大学化学工程与生物工程学院, 浙江 杭州 310027;
    2 浙江科技学院生物与化学工程学院, 浙江 杭州 310023;
    3 捷马化工股份有限公司, 浙江 龙游 324400
  • 收稿日期:2016-05-20 修回日期:2016-09-08 出版日期:2017-01-05 发布日期:2017-01-05
  • 通讯作者: 蒋成君(1981-),男,博士,高级工程师。E-mail:jcj312@163.com。
  • 作者简介:蒋成君(1981-),男,博士,高级工程师。E-mail:jcj312@163.com。
  • 基金资助:
    中国博士后科学基金(2014M551745)及浙江省自然科学基金(LY15B060008)项目。

Research on the dynamic kinetic resolution of 1,1,1-trifluoroisopropylamine by Pd/Al2O3 and Novozyme 435

JIANG Chengjun1,2, XU Guoming3, YUAN Shenfeng1   

  1. 1 College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China;
    2 School of Biological and Chemical Engineering, Zhejiang University of Science & Technology, Hangzhou 310023, Zhejiang, China;
    3 JingMa Chemicals Co., Ltd., Longyou 324400, Zhejiang, China
  • Received:2016-05-20 Revised:2016-09-08 Online:2017-01-05 Published:2017-01-05

摘要: 应用响应面优化的方法研究Pd/Al2O3和Novozyme 435动态动力学拆分1,1,1-三氟异丙胺(TFPA)的协同作用。根据Box-Behnken实验设计原理,对实验进行设计与分析,以转化率和ee值为响应量建立回归模型,分析各因素的显著性与交互作用。结果表明:反应条件对ee值的影响较小,以转化率为响应量时,Pd/Al2O3和Novozyme 435交互作用显著,两种催化剂有相互抑制作用。最佳工艺条件为:Pd/Al2O3催化剂用量5g/L、反应温度50℃、Novozyme 435的用量10g/L、TFPA的浓度0.5mol/L,预测转化率可以达到98.56%,与实验相符。产物N-[(1R)-2,2,2-三氟-1-甲基乙基]-乙酰胺的ee值可达到96.69%。

关键词: 酶, 催化, 化学反应, 选择性

Abstract: Response Surface Methodology (RSM) was successfully applied to study the synergistic effect of Pd/Al2O3 and Novozyme 435 on the dynamic kinetic resolution of 1,1,1-trifluoroisopropylamine(TFPA). The variables taken into consideration were reaction temperature,substrate concentration,the Pd/Al2O3 amount,and the Novozyme 435 amount. Experiments were designed and analyzed based on Box-Behnken principle. A statistical model was used to evaluate the influence of the variables on the conversion and enantiomeric excess(ee). It was found that the interaction between the Novozyme 435 and Pd/Al2O3 was a significant parameter that affected TFPA conversion. The optimum conditions for RSM were:reaction temperature of 50℃,TFPA concentration of 0.5mol/L,10g/L of Novozyme 435,and 5g/L of Pd/Al2O3. The actual experimental conversion rate under optimum conditions was similarly as the maximum predicted value of 98.56%. The product N-[(1R)-2,2,2-trifluoro-1-methylethyl]-acetamide was obtained with enantiomeric excesses of 96.69%.

Key words: enzyme, catalysis, chemical reaction, selectivity

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