Author(s)

Leonid L. Gogin^*, Elena G. Zhizhina, Zinaida P. Pai

Federal Research Center Boreskov Institute of Catalysis, Novosibirsk, Russia.

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.

Hydroquinone, Naphthoquinones, Heteropolyacid, Diene Synthesis

Gogin, L. , Zhizhina, E. and Pai, Z. (2019) One-Pot Process of Naphthoquinones Synthesis from Hydroquinone in the Presence of Solutions of Mo-V-P Heteropolyacids as Bifunctional Catalysts. Modern Research in Catalysis, 8, 1-9. doi: 10.4236/mrc.2019.81001.