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Kreuzkonjugierte Cyanine und Merocyanine aus Salzen des 1‐substituierten 2,3‐Dimethylchinoxalins (Vinyloge von Indigo‐imiden mit cyclisch eingebauter Imidfunktion). Vorläufige Mitteilung
Author(s) -
Schelz Dieter
Publication year - 1977
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19770600629
Subject(s) - chemistry , cyanine , merocyanine , dimethylformamide , conjugated system , indigo , polymer chemistry , medicinal chemistry , organic chemistry , fluorescence , solvent , polymer , molecule , art , physics , quantum mechanics , visual arts
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.