| 摘要 |
Disclosed is a process for the preparation of l-amino-4-bromoanthraquinones by the bromination of the corresponding 1-aminoanthraquinone wherein a l-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 the isomeric l-amino-2-bromoanthraquinones.
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