Kreuzkonjugierte Cyanine und Merocyanine aus Salzen 1‐substituierter 2,3‐Dimethylchinoxaline. 1. Mitteilung . Über die Isolierung der Farbbasen nach spontaner Umwandlung und nach Oxydation der Reaktanten mit Kupfer(II)acetat oder Silberoxid | Zendy

Schelz Dieter | Zendy

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Kreuzkonjugierte Cyanine und Merocyanine aus Salzen 1‐substituierter 2,3‐Dimethylchinoxaline. 1. Mitteilung . Über die Isolierung der Farbbasen nach spontaner Umwandlung und nach Oxydation der Reaktanten mit Kupfer(II)acetat oder Silberoxid

Author(s) -

Schelz Dieter

Publication year - 1981

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.19810640825

Subject(s) - chemistry , polymer chemistry , redox , copper , medicinal chemistry , conjugated system , yield (engineering) , cyanine , inorganic chemistry , organic chemistry , materials science , physics , quantum mechanics , metallurgy , fluorescence , polymer

Cross‐conjugated Cyanines and Merocyanines, Obtained from Salts of 1‐Substituted 2,3‐Dimethylquinoxalines. 1. Communication Vorläufige Mitteilung siehe [1]. . On the Isolation of the Dye Bases Formed upon a Spontaneous Reaction on upon Oxidation of the Reactants with Copper(II) Acetate or Silver Oxide Quaternary salts of 2,3‐dimethylquinoxalines 1 ‐ in some cases in the presence of the methylidene bases 2 ‐ yield, on dissolving in dimethyl sulfoxide or dimethyl‐formamide, the dye bases 3 in a spontaneous reaction. Higher yields of 3 are obtained by oxidation of 1, 2 or 1/2 with copper (II) acetate or silver oxide. VIS. and 1 H‐NMR. spectra of the dyes are given. Their structural relationship to Hünig 's [2] [8] two‐step‐redox systems is discussed.

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