1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid → Anthraquinone

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Example 19 was repeated, provided that the compounds shown in 1st and 2nd columns of the following table were used in place of the 1-amino-2-carboxy-4-bromoanthraquinone and 4-(4'-β-hydroxyethylsulfonylphenoxy)thiophenol, respectively, thereby obtaining a corresponding anthraquinone compound. A color shade obtained by dyeing cotton with the compound is as shown in a 3rd column of the table.

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