Organic compounds -- part of the class 532-570 series – Organic compounds – Polycyclo ring system containing anthracene configured ring...
Patent
1991-05-02
1992-05-26
Cintins, Marianne
Organic compounds -- part of the class 532-570 series
Organic compounds
Polycyclo ring system containing anthracene configured ring...
552237, C07C 4600
Patent
active
051170140
ABSTRACT:
Disclosed is a process for the preparation of 1-amino-4-bromoanthraquinones by the bromination of the corresponding 1-aminoanthraquinone wherein a 1-amino-anthraquinone is contacted with elemental bromine in the presence of a carboxylic acid solvent and added hydrobromic acid. The process is not as complicated as known processes and produces lower amounts of isomeric 1-amino-2-bromoanthraquinones.
REFERENCES:
Organic Synthesis, Coll. vol. 3, pp. 575-576, John Wiley & Son, Inc. (1955).
FIAT FINAI Report No. 1313, p. 222 (1948).
Cintins Marianne
Eastman Kodak Company
Heath, Jr. William P.
Nguyen Jessica
Thomsen J. Frederick
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