Process for producing hydroanthraquinones

Details Process for producing hydroanthraquinones Process for producing hydroanthraquinones

1980-12-09

1983-01-18

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4968

Patent

active

043691404

ABSTRACT:
A hydroanthraquinone is produced from a reaction mixture obtained by the Diels-Alder reaction of naphthoquinone with a conjugated diolefin in an inert organic solvent. The reaction mixture in an inert organic solvent is oxidized with an oxidizing agent to decompose quinhydrone or quinhydrone derivative produced by said Diels-Alder reaction and the crystallized hydroanthraquinones are separated from said inert organic solvent.

REFERENCES:
patent: 2495229 (1950-01-01), Pawsey
patent: 3870730 (1975-03-01), Scharfe et al.
patent: 4155922 (1979-05-01), Wenzel et al.
patent: 4176125 (1979-11-01), Matsuura et al.

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