Process for the preparation of aminohydroxyanthraquinones

Details Process for the preparation of aminohydroxyanthraquinones Process for the preparation of aminohydroxyanthraquinones

1974-06-21

1976-03-30

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9726, C09B 150

Patent

active

039474771

ABSTRACT:
Preparations of compounds of the formula ##SPC1##
Wherein R denotes a hydrocarbon residue and A can be substituted further by conversion of o-phthalic acids of the formula ##SPC2##
Or their anhydrides with amines of the formula ##SPC3##
In boric aicd/sulphuric acid.

REFERENCES:
patent: 1659360 (1928-02-01), Gubelmann et al.
patent: 1922480 (1933-08-01), Koehler
lubs, The Chemistry of Synthetic Dyes and Pigments, Hafner Publishing Co., N.Y. (1955), pp. 338 to 342.

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