Lin Xin-jie
2012
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Journal
Science Technology and Engineering
Abstract
Amyl 4-hydroxy-3-methoxycinnamate was prepared by direct esterification of 3-(4-hydroxy-3-methoxy-phenyl)-2-propenoic acid and 1-pentanol as raw materials with ammonium ferric sulfate dodecahydrate as a catalyst.The influences of some factors on the synthesis process were studied.The optimal reaction conditions based upon 0.2 mol of 3-(4-hydroxy-3-methoxyphenyl)-2-propenoic acid were chosen that the molar ratio of 1-pentanol and acid was 2∶ 1,catalyst 6 g,cyclohexane as watercarrying reagent 30 mL,refluing reaction time 3.5 hours,et al.The yield of the product reaches 97.0 %.The structure of the product is characterized by IR and 1H NMR spectrum.This catalyst is mild,convenient to use,and gives high yields.