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Facile Preparation of 4-Substituted Quinazoline Derivatives
11:51

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Published on: February 15, 2016

Ethyl 4-oxo-8-trifluoro-methyl-1,4-dihydro-quinoline-3-carboxyl-ate

B Garudachari1, Arun M Islor, M N Satyanarayan

  • 1National Institute of Technology-Karnataka, Department of Chemistry, Organic Chemistry Laboratory, Surathkal, Mangalore 575 025, India.

Acta Crystallographica. Section E, Structure Reports Online
|March 8, 2013
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...