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2-Methoxycanthin-6-one: A New Alkaloid from the Stem Wood of Quassia amara

V C Njar1, T O Alao, J I Okogun

  • 1Department of Chemistry, University of Ibadan, Ibadan, Nigeria.

Planta Medica
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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...