For synthesis of flavoring agent E-ethyl cinnamate in an economic way using Wittig reaction, MnO₂ doped MgO nanocomposites were prepared by alkali leached hydrothermal method. The resultant nanocomposites were characterized by XRD, UV-DRS, FT-IR, FESEM, EDAX, XPS and Hammett indicator method. This surface modified MnO₂ doped MgO can be used as green solid base for Wittig reaction between benzaldehyde and phosponium salt for synthesis of E-ethyl cinnamate under solvent free approach. Nanocomposite of MgO with MnO₂ in combination with green mechanochemical approach seems to be more economic in comparison to pure nanosized MgO under conventional solvent stirring. Both efforts are complementary for promoting surface basic activity of MgO for high-yield synthesis of E-ethyl cinnamate using Wittig reaction. The product ethyl cinnamate has been characterized by HR-MS, IR, ¹H-NMR.

为了利用Wittig反应经济地合成调味剂E-肉桂酸乙酯，通过碱浸水热法制备了MnO ₂掺杂的MgO纳米复合材料。通过XRD，UV-DRS，FT-IR，FESEM，EDAX，XPS和Hammett指示剂法对所得纳米复合材料进行表征。这种表面改性的MnO ₂掺杂的MgO可用作绿色固体基础，用于苯甲醛和磷鎓盐之间的Wittig反应，在无溶剂条件下合成肉桂酸E-乙酯。MgO与MnO ₂与绿色复合的纳米复合材料与在常规溶剂搅拌下的纯纳米MgO相比，机械化学方法似乎更经济。两种努力都是互补的，以促进MgO的表面碱性活性，从而利用Wittig反应高产率地合成肉桂酸E-乙酯。肉桂酸乙酯的产物已通过HR-MS，IR，¹ H-NMR进行了表征。