A. Pardal, S. Ramos, P. F. Santos
Mar 1, 2002
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Journal
Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry
Abstract
The synthesis and spectroscopic characterisation of some representative N-alkyl-substituted quaternary ammonium salts derived from benzothiazole, benzoxazole, benzo-selenazole, indole and quinoline are described. These heterocyclic salts, bearing an activated methyl group in the 2-position in relation to the nitrogen atom and N-methyl, -pentyl, -hexyl and -decyl chains, are typical precursors of cyanine dyes.