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Citation: TONG Shan-Ling, LIU An-Li, YANG Ke-Er, SUN Chang-Yong, YAN Yan. Preparation of 2-Ethoxy-1,4-naphthoquinone from 2-Hydroxy-1,4-naphthoquinone[J]. Chinese Journal of Applied Chemistry, ;2005, 22(11): 1249-1252. shu

Preparation of 2-Ethoxy-1,4-naphthoquinone from 2-Hydroxy-1,4-naphthoquinone

1.
Department of Chemistry, Shantou University, Shantou 515063

Corresponding author: YAN Yan,
Received Date: 21 December 2004
Available Online: 16 June 2005

2-Ethoxy-1,4-naphthoquinone(EONQ) was synthesized by reflux in an ethanol solution with 2-hydroxy-1,4-naphthoquinone(HNQ) and ethanol as reactants and concentrated HNO₃ as the catalyst.The(reflux) time,the dosage of catalyst and the reaction temperature were selected for optimizing reaction conditions.Product characterization was performed by means of UV-Vis,IR,¹H NMR,elemental analysis,and GC-MS.The product was a farinose yellow solid.The experimental results indicate that the method is very simple in preparing EONQ.
- ethoxynaphthoquinone,
- hydroxynaphthoquinone,
- ethanol,
- nitric acid,
- reflux
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