Oxidation of monohydroxyaryl compounds to 1,4-quinones

Details Oxidation of monohydroxyaryl compounds to 1,4-quinones Oxidation of monohydroxyaryl compounds to 1,4-quinones

C - Chemistry, Metallurgy

07

C

260/396

C07C 50/00 (2006.01) C07C 46/08 (2006.01)

Patent

CA 1056843

Title of the Invention Oxidation of Monohydroxy Aryl Compounds to 1,4-Quinones Abstract of the Disclosure A monohydroxy aryl compound, e.g., phenol or .alpha.-naphthol, or a mono- or dialkyl phenol or .alpha.-naphthol, is oxidized to the corresponding monomeric 1,4-quinone in a nitrile solution containing a soluble copper-nitrile complex catalyst by reaction with an oxygen-containing gas at a temperature in the range of about from 0° to 100°C. and under an oxygen partial pressure of about from 7 to 200 atmospheres, and at least about 20 atmospheres when the compound being oxidized is phenol. The elevated oxygen pressure favors conversion to the monomeric quinone, as contrasted to polymeric products.

257741

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