Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-06-23
1980-06-17
Garner, Vivian
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
568772, C07C 4516, C07C 4964
Patent
active
042083397
ABSTRACT:
p-Benzoquinone is prepared by oxidizing phenol with molecular oxygen or with a gas in which oxygen is present, in the liquid phase, in the presence of cuprous or cupric ions. The improvement resides in carrying out the reaction in the presence of a metal, in the metallic form, which is selected from the group consisting of nickel, iron, tin, cobalt, chromium, molybdenum, magnesium and copper. The resultant p-benzoquinone is useful as an industrial source of hydroquinone, which is employed in photography.
REFERENCES:
patent: 3549670 (1970-12-01), Spousta
patent: 3870731 (1975-03-01), Hutchings
patent: 3935247 (1976-01-01), Kothari
Costantini Michel
Jouffret Michel
Garner Vivian
Rhone-Poulenc Industries
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