Phenol → 1-Phenoxyanthracene-9,10-dione

Participants

Reaction Steps

Ya. B. Shteinberg and S. S. Tkachenko, Zh. Prikl. Khim. 49 (1976) 4, 904-905, describe a process for the preparation of 1-amino-2-phenoxy-4-hydroxyanthraquinone in an aqueous medium. In this process, 1-amino-2-bromo-4-hydroxyanthraquinone is reacted with phenol in aqueous potassium hydroxide solution in the presence of dispersants at 150° C. The authors claim yields of 87-90%. On repeating this process with various dispersants, we were unable to obtain a phenoxyanthraquinone derivative which could be used as a dye. In every case, the content of 1-amino-2-phenoxy-4-hydroxyanthraquinone in the products was less than 80%.

Provenance & Evidence