Perylene dyes with high resistance to alkali was written by Langhals, Heinz;Jaschke, Harald;Bastani-Oskoui, Haleh;Speckbacher, Markus. And the article was included in European Journal of Organic Chemistry in 2005.Formula: C50H62N2O4 This article mentions the following:
The attachment of a 纬-hydroxy alkyl group to a nitrogen atom of perylene-3,4:9,10-tetracarboxylic bisimides results in a persistency to alk. hydrolysis, even to alkali alcoholates. The solubility of these dyes can be controlled by substituents in the 尾-position of the alkyl groups so that either highly stable pigments or dyes for homogeneous solutions with high fluorescence quantum yields are obtained. In the experiment, the researchers used many compounds, for example, 2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6Formula: C50H62N2O4).
2,9-Di(tridecan-7-yl)anthra[2,1,9-def:6,5,10-d’e’f’]diisoquinoline-1,3,8,10(2H,9H)-tetraone (cas: 110590-84-6) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Formula: C50H62N2O4
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem