D. Schelz
1989
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0
Influential Citations
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Citations
Journal
Dyes and Pigments
Abstract
Abstract A review of reactions of quaternary salts of 2,3-dimethylquinoxaline, especially those leading to indigoid or quinoid chromogens, is combined with the presentation of recent results. Part II includes the syntheses and properties of vinylene-diquinoxalinium-bis-perchlorates and of indigo imide-type indicator bases. An unexpected chromogen was obtained on the oxidative dimerization of 6-dimethylamino-2,3-dimethyl-1-phenylquinoxalinium-perchlorate. Reaction mechanisms and polarographic results are discussed.