%0 Journal Article
%T Synthesis and Spectroscopic Characterisation of N-Alkyl Quaternary Ammonium Salts Typical Precursors of Cyanines
%A A. C. Pardal
%A S. S. Ramos
%A P. F. Santos
%A L. V. Reis
%A P. Almeida
%J Molecules
%D 2002
%I MDPI AG
%R 10.3390/70300320
%X The synthesis and spectroscopic characterisation of some representative N-alkylsubstituted quaternary ammonium salts derived from benzothiazole, benzoxazole, benzoselenazole, 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.
%K Heterocyclic quaternary ammonium salts
%K cyanines precursors
%K spectroscopic characterisation
%U http://www.mdpi.com/1420-3049/7/3/320