Abstract
1) Trimethine cyanines were prepared by the condensation of 2, 6-lutidine ethiodide, 2-methylbenzothiazole ethiodide and 2′-methyl-6-methoxypyrido-2, 3:5′, 4′-thiazole methiodide with 2-ω-(o, m′-dimethylacetylanilino)-vinylpyridine methiodide and 2′-ω-(o, m′-dimethylanilino)-vinyl-6-chloropyrido-2, 3:5′, 4′-thiazole methiodide.
2) β-Methyltrimethine cyanines and γ-bromopentamethine cyanines were obtained by the application of 2-methyl-5-chlorobenzoxazole ethiodide, 2-methylbenzothiazole methiodide and quinaldine methiodide to S-ethyl ether of isothioacetanilide, 2-β-ethylmercaptopropen ylben zothiazole ethiodlde, bromopropane dianil and 2-γ-bromo-δ-acetylanilino-α, γ-butadienylbenzothiazole methiodide.
3) Heptamethine cyanines were prepared by the reaction of pentadiene dianil and 2-ω-acetylanilino-α, γ, ε-hexatrienylbenzothiazole methiodide with 2, 4-dimethylthiazole methiodide and 6-ethoxyquinaldine methiodide.
