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The Stereoselective Synthesis of (E)-Cinnamates Hu Ronghua, Zhao Hong, Cai Mingzhong, Hao Wenyian Abstract Heck arylation of arenediazonium
tetrafluoroborates with acrylic acid in methanol or ethanol proceeded smoothly in the
presence of a catalytic amount of Pd(OAc)2 to afford corresponding (E)-methyl
cinnamates or (E)-ethyl cinnamates in good yields. The advantages of the described
method are readily available starting materials, mild reaction conditions, good yields and
high stereoselectivity. It provides a practical procedure for stereoselective synthesis of
(E)-cinnamates.
一种立体选择合成(E)-肉桂酸酯的新方法 胡荣华1,2 赵红1 蔡明中1*
郝文燕1 摘要 在催化量的Pd(OAc)2存在下,四氟硼酸芳香重氮盐和丙烯酸在甲醇或乙醇中的Heck芳基化反应能顺利进行,以良好的产率生成相应的(E)-肉桂酸甲酯和(E)-肉桂酸乙酯。由该法合成(E)-肉桂酸酯具有起始原料易得、反应条件温和、产率高和立体选择性好等优点,本文为(E)——肉桂酸酯的立体选择合成提供了一条方便实用的新途径。 胡荣华 男,32岁,讲师,硕士,从事有机化学教学与科研工作。*联系人 |