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Citation: LIU Chang-Hui, TANG Rui-Ren, LUO Yi-Ming, LEI Cun-Xi. Synthesis of 3-oxo-α-Ionone from α-Ionone Oxidized with Oxygen Catalyzed by Cu(acac)₂[J]. Chinese Journal of Applied Chemistry, ;2008, 25(5): 622-625. shu

Synthesis of 3-oxo-α-Ionone from α-Ionone Oxidized with Oxygen Catalyzed by Cu(acac)₂

1.
a Department of Chemistry and Environmental Engineering, Hunan City University, Yiyang 413000;
2.
b College of Chemistry and Chemical Engineering, Central South University, Changsha

Corresponding author: LIU Chang-Hui,
Received Date: 11 May 2007
Available Online: 20 July 2007
Fund Project: 湖南城市学院资助项目(07C002) (07C002)

Oxidation of α-ionone catalyzed by Cu(Ⅱ) acetylacetonate (Cu(acac)₂) with molecular oxygen as the oxidant was studied.Various factors were investigated including reaction time,reaction temperature,amount of catalyst,oxygen speed,the types and amounts of solvent by using orthogonal test method.The experiment results indicate that reaction temperature affects the reaction significantly,and the yield of the title product was 40.1% when the reaction was run at 80℃ for 10 h with Cu(acac)₂ of a mass fraction of 6% as catalyst at an atmospheric oxygen speed of 50 mL/min with pyridine of a mass fraction of 40% as solvent.The structure of product was characterized by MS,IR,¹H NMR and elemental analysis.The catalytic activity of Cu (acac)₂ was maintained after repeated use for five times.
- allylic oxidation,
- Cu(Ⅱ) acetylacetonate,
- ionone,
- molecular oxygen,
- orthogonal test
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Synthesis of 3-oxo-α-Ionone from α-Ionone Oxidized with Oxygen Catalyzed by Cu(acac)2

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Synthesis of 3-oxo-α-Ionone from α-Ionone Oxidized with Oxygen Catalyzed by Cu(acac)₂