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Enhancement of the electrocatalytic activity of Pt nanoparticles in oxygen reduction by chlorophenyl

Zhi-You Zhou1, Xiongwu Kang, Yang Song

  • 1Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, USA.

Chemical Communications (Cambridge, England)
|February 25, 2012
PubMed

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Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...