Phase-transfer oxidation of 2-methyl-1-naphthol into 2-methyl-1,4-naphthoquinone in the presence of vanadomolybdophosphoric heteropolyacids |
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| Authors: | K I Matveev E G Zhizhina V F Odyakov V N Parmon |
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| Institution: | (1) G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 5 prosp. Akad. Lavrentieva, 630090 Novosibirsk, Russian Federation |
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| Abstract: | 2-Methyl-1-naphthol is oxidized into 2-methyl-1,4-naphthoquinone (menadione) by air in the presence of vanadomolybdophosphoric heteropolyacids and their salts. The reaction proceeds in a biphasic system, and the yield of menadione is up to 85 %. The influence of the composition of the heteropolyacids on the rate and the selectivity of the reaction was studied, and the reaction mechanism was proposed.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1208–1211, July, 1994. |
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| Keywords: | 2-methyl-1-naphthol 2-methyl-1 4-naphthoqumone phase-transfer catalysis oxidation heteropolyacids |
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