Synthesis and spectroscopic characterisation of n-alkyl quaternary ammonium salts typical precursors of cyanines

Pardal, Ana Cristina; Ramos, S.S.; Santos, P. F.; Reis, L. V.; Almeida, P.

http://hdl.handle.net/10400.26/1295

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Abstract(s)

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.

Keywords

Heterocyclic quaternary ammonium salts Cyanines precursors Spectroscopic characterisation

URI

http://hdl.handle.net/10400.26/1295

Citation

Pardal, A.C., Ramos S.S., Santos P.F., Reis, L.F.& Almeida, P. (2002). Synthesis and spectroscopic characterisation of n-alkyl quaternary ammonium salts typical precursors of cyanines. Molecules, 7, 320-330.