Studies on Cyanine Dyes. VIII

Syntheses of Merocarbocyanine Dyes

Abstract

Corresponding merocarbocyanine dyes were obtained by the respective application of 3-phenyloxazolone-5, 3-ethylrhodanine, 3-phenylrhodanine, 1-methyl-3-phenylpyrazolone, or 3-hydroxythionaphthenone to 2, 2′-ω, ω′-(N, N′-diphenylhydrazino)-divinylquinoline dimethiodide and diethiodide, and 2, 2′-ω, ω′-(N, N′-ditolylhydrazino)-divinylbenzothiazole diethiodide.