Process for the preparation of 1-amino-2-carboxyanthraquinones

Details Process for the preparation of 1-amino-2-carboxyanthraquinones Process for the preparation of 1-amino-2-carboxyanthraquinones

1990-07-12

1991-11-19

Ivy, C. Warren

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

552251, C07C 5024, C07C 9724, C09B 116

Patent

active

050668200

ABSTRACT:
The preparation of 1-amino-2-carboxyanthraquinones I ##STR1## (X denotes hydrogen, chlorine or bromine) by oxidation, under alkaline conditions, of a 1-aminoanthraquinone substituted in the 2-position by an oxidizable carbo-organic radical followed by acidification of the reaction mixture, wherein a 1-amino-2-acetylanthraquinone II ##STR2## (Y denotes chlorine or bromine and n is equal to 0, 1 or 2) is reacted with a peroxide compound or oxygen as oxidizing agent.

REFERENCES:
patent: 1830838 (1931-11-01), Hopff
patent: 3211754 (1965-10-01), Klingsberg
patent: 3541182 (1970-11-01), Kolliker et al.
patent: 3836548 (1974-09-01), Grelat et al.
Morrison & Boyd, Organic Chemistry, 1974, pp. 630 and 635.
Bios 987, 13, 3 pages, J. Avery, et al., "Indanthrene Red FBB".

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