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Huang, G., Zhao, H.-R., Zhou, W., Dong, J.-Y., Zhang, Q.-J., Meng, Q.-Q., Zhu, B.-Q. and Li, S.-S. (2017) 6-Substituted 1,4-Naphthoquinone Oxime Derivatives (I): Synthesisand and Evaluation of Their Cytotoxic Activity. Monatshefte für Chemie-Chemical Monthly, 148, 1011-1023.
https://doi.org/10.1007/s00706-016-1899-z

has been cited by the following article:

• TITLE: One-Pot Process of Naphthoquinones Synthesis from Hydroquinone in the Presence of Solutions of Mo-V-P Heteropolyacids as Bifunctional Catalysts

  AUTHORS: Leonid L. Gogin, Elena G. Zhizhina, Zinaida P. Pai

  KEYWORDS: Hydroquinone, Naphthoquinones, Heteropolyacid, Diene Synthesis

  JOURNAL NAME: Modern Research in Catalysis, Vol.8 No.1, January 31, 2019

  ABSTRACT: 1,4-Naphthoquinones (NQ) is a class of organic compounds with a number of important properties. However, the existing methods of their synthesis either give a low NQ yield or multistage and require a lot of time. In the present work new one-pot process of NQ synthesis from hydroquinone (HQ) and substituted 1,3-dienes at room temperature is proposed. The solution of heteropolyacid H7PMo8V4O40 (HPA-4) is used as a bifunctional (acid and redox) catalyst for this process. The influence of a number of factors on key process parameters has been studied. It is demonstrated that unsubstituted and a number of alkyl substituted NQ with the yields of 50% - 80% and purity of 92% - 99% can be obtained by this method. The results obtained allow to significantly simplify the synthesis of NQ directly from HQ in comparison with the described similar methods.