Anthraquinone → 1,8-Diamino-2-bromo-7-butoxy-4,5-dihydroxyanthracene-9,10-dione

Participants

Reaction Steps

When 5.5 of 1,8-diamino-4,5-dihydroxy-2-phenoxy-7-bromoanthraquinone (preparation see Example 417a) are used in Example 338a instead of the anthraquinone component mentioned there, then 4.5 g, corresponding to 85% of theory, of 1,8-diamino-4,5-dihydroxy-2-n-butoxy-7-bromoanthraquinone are obtained quite correspondingly, the colour shade of which on silica gel is a blue with the Indicator Number 14.

Provenance & Evidence