✦ LIBER ✦
Kreuzkonjugierte Cyanine und Merocyanine aus Salzen des 1-substituierten 2,3-Dimethylchinoxalins (Vinyloge von Indigo-imiden mit cyclisch eingebauter Imidfunktion). Vorläufige Mitteilung
✍ Scribed by Dieter Schelz
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- German
- Weight
- 184 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Crossed conjugated Cyanines and Merocyanines, obtained from Salts of 1‐substituted 2,3‐Dimethyl‐quinoxalines. (A second type of vinylogous Indigo‐imides.) Preliminary Communication.
On dissolving quaternary salts of 2,3‐dimethylquinoxaline in dimethylformamide or dimethylsulfoxide, a spontaneous reaction takes place: the title compounds are isolated from the reaction mixtures; they are easily oxidized, e.g. by MnO~2~. Mechanistic aspects are discussed.