Synthesis and spectroscopic characterisation of n-alkyl quaternary ammonium sal...

• Author(s): Pardal, Ana Cristina ; Ramos, S.S. ; Santos, P. F. ; Reis, L. V. ; Almeida, P.
• Date: 2002
• Origin: Repositório Institucional do IPBeja
• Subject(s): Heterocyclic quaternary ammonium salts; Cyanines precursors; Spectroscopic characterisation
• Document Type: Article
• Language: English

Description

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.