Molecules

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

AC Pardal, SS Ramos, PF Santos, LV Reis, P Almeida

Index: Pardal; Ramos; Santos; Reis; Almeida Molecules, 2002 , vol. 7, # 3 p. 320 - 330

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Citation Number: 59

Abstract

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.