Citation:
ZHANG Tianyong, DU Jing, LI Bin, WANG Xiao. Synthesis of 1,4-Naphthoquinone by Oxidation of 1-Naphthylamine[J]. Chinese Journal of Applied Chemistry,
;2013, 30(5): 500-505.
doi:
10.3724/SP.J.1095.2013.20308
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A new process was developed to oxidize 1-naphthylamine by H2O2 in acetic acid for preparing 1,4-naphthoquinone. The effects of the reaction temperature,the oxidation time,molar ratio of 1-naphthylamine to H2O2,the concentration of sulfuric acid and the concentration of H2O2 on the product yield were investigated. The optimal reaction conditions for preparing 1,4-naphthoquinone with yield higher than 52.2% are as followings:the molar ratio of 1-naphthylamine to H2O2 is 1:10,the mass concentration of H2O2 is 5%,the mass concentration of sulfuric acid is 45%,reaction temperature is 80℃,and reaction time is 3 h. This method has the advantages such as simplicity,easy separation of the product and short reaction time.
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Keywords:
- naphthylamine,
- naphthoquinone,
- hydrogen peroxide,
- oxidation
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