Cuprous catalysts were more effective than cupric ones in the Ullmann condensation of haloanthraquinones with amines in aprotic media. In the presence of Cu(I) catalyst, amines with a hydroxyl group (3-amino-1-propanol and 2-aminoethanol) were more reactive than the higher basic butylamine.
CITATION STYLE
Arai, S., Yamagishi, T., Ototake, S., & Hida, M. (1977). Ullmann Condensation Reaction of Haloanthraquinone Derivatives with Amines in Aprotic Solvents. Bulletin of the Chemical Society of Japan, 50(2), 547–548. https://doi.org/10.1246/bcsj.50.547
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