Process for the manufacture of anthraquinone

Details Process for the manufacture of anthraquinone Process for the manufacture of anthraquinone

1980-12-22

1981-12-08

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252426, 252428, 585332, 585375, 585470, 585730, 585749, C07C 5018, B01J 3102, C07C 202, C07C 522

Patent

active

043047246

ABSTRACT:
The present invention provides a process for making anthraquinone by the cyclization reaction of orthobenzoylbenzoic acid. The process uses as a catalyst a cation-exchange resin formed from a polymer with a polytetrafluoroethylene backbone and sulfonic-acid sidechains.

REFERENCES:
patent: 3326809 (1967-06-01), Mageli et al.
patent: 3408349 (1968-10-01), Matsunaga
patent: 4038213 (1977-07-01), McClure et al.
patent: 4045456 (1977-08-01), Merger et al.
patent: 4054683 (1977-10-01), Gruber
Chemical Abstracts, vol. 80, #133126u, "Anthraquinone" Japan, Kokai, 74,07,260, 1974.

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