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Mastrorilli, P.; Muscio, F.; Suranna, G.P.; Nobile, C.F.; Latronico, M.
Journal of molecular catalysis. A, Chemical, 01/2001, Letnik: 165, Številka: 1Journal Article
The aerobic oxidation of substituted phenols with the catalytic system M(acac) n /3-methylbutanal/O 2 has been investigated. Co(acac) 2 and Mn(acac) 3 promoted the transformation of 2,6-dimethylphenol and 2,6-di- t-butylphenol into their corresponding diphenoquinones and benzoquinones. In the oxidation of 2,3,6-trimethylphenol, the same catalysts yielded 32–34% of the relevant biphenol. Cu(acac) 2 converted 2-naphthol into 1,1′-bi-2-naphthol with 84% yield. Supported Co(II) and Cu(II) complexes have also been used as heterogeneous catalysts for the oxidation of 2,6-di- t-butylphenol and 2-naphthol, respectively.
