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Biocompatible, functional spheres based on oxidative coupling assembly of green tea polyphenols

Zhenhua Chen1, Caihong Wang, Junze Chen

  • 1National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.

Journal of the American Chemical Society
|March 9, 2013
PubMed

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Oxidation of Phenols to Quinones01:17

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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...