111944-98-0Relevant articles and documents
Composition for hair dyeing comprising condensates of quinoline-5, 8-diones or of quinoxaline-5,8-diones and substituted pyrroles, anilines or indoles
-
, (2008/06/13)
The use of derivatives of quinoline- or quinoxaline-5,8-diones or -diols in cosmetics, especially for the dyeing of keratinous matter and, in particular, the hair. It also relates to novel compounds of this class. The invention is also directed to dyeing compositions comprising the said compounds and to the method of dyeing keratinous fibers.
Regioselective 6-Arylation of 5,8-Quinolinedione with N-Alkyl- and N,N-Dialkyl-anilines Promoted by Metal Ions
Yoshida, Katsuhira,Ishiguro, Miwa,Honda, Hiroyuki,Kubo, Yuji
, p. 1191 - 1194 (2007/10/02)
The reaction of 5,8-quinolinedione (1) with N,N-dialkylanilines in acetic acid was strongly promoted by some metal ions to give selectively the 6-arylated products, 6-(4-N,N-dialkylaminophenyl)-5,8-quinolinediones.With N-alkylanilines the reaction gave a