The Autoxidation of Phenols Catalyzed by Phthalocyanine-Fe(II) and Salcomine-pyridine

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概要

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• The autoxidation of 2,4,6-tri-<I>t</I>-butylphenol (<B>1</B>), 2,6-di-<I>t</I>-butylphenol (<B>2</B>), and 2,4-di-<I>t</I>-butylphenol (<B>3</B>) is catalyzed by phthalocyanine-Fe(II) (PC-Fe(II)) and salcomine-pyridine (SAL-Py). PC-Fe(II) gives, preferentially, the coupling product of such phenoxy radicals as <B>4</B>, <B>7</B>, and <B>8</B>. SAL-Py, on the other hand, gives <I>o</I>-and <I>p</I>-benzoquinones, such as <B>5</B> and <B>6</B>, resulting from the coupling of the phenoxy radical and the hydroperoxy radical. Metal phthalocyanines including Mn(II), Co(II), Ni(II), or Cu(II) as the central metal ion are inactive as catalysts for the oxidation. PC-Fe(II) does not catalyze the autoxidation of phenol itself and mono-alkylated phenols.

• 公益社団法人 日本化学会の論文

著者

• Tada Masaru

  Department Of Chemistry School Of Science And Engineering Waseda University

• Katsu Takashi

  Department of Biophysical Chemistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University

• Katsu Takashi

  Department of Chemistry, School of Science and Engineering, Waseda University

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