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

Participants

Reaction Steps

When the process described in Example 165a is carried out and, instead of the anthraquinone derivative mentioned there, 5.7 g of 1,8-diamino-4,5-dihydroxy-3,6-diphenoxyanthraquinone (preparation see Example 351a) are used, then 4.2 g, corresponding to 80% of theory, of 1,8-diamino-4,5-dihydroxy-3,6-di-n-butoxyanthraquinone are obtained, the colour shade of which on silica gel is a blue with the Indicator Number 14.

Provenance & Evidence