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Molecules 2002, 7(3), 320-330; doi:10.3390/70300320
Article

Synthesis and Spectroscopic Characterisation of N-Alkyl Quaternary Ammonium Salts Typical Precursors of Cyanines

1, 2, 1, 1 and 2,*
Received: 23 October 2001; in revised form: 18 February 2002 / Accepted: 26 February 2002 / Published: 31 March 2002
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Abstract: 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 Heterocyclic quaternary ammonium salts; cyanines precursors; spectroscopic characterisation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Pardal, A.C.; Ramos, S.S.; Santos, P.F.; Reis, L.V.; Almeida, P. Synthesis and Spectroscopic Characterisation of N-Alkyl Quaternary Ammonium Salts Typical Precursors of Cyanines. Molecules 2002, 7, 320-330.

AMA Style

Pardal AC, Ramos SS, Santos PF, Reis LV, Almeida P. Synthesis and Spectroscopic Characterisation of N-Alkyl Quaternary Ammonium Salts Typical Precursors of Cyanines. Molecules. 2002; 7(3):320-330.

Chicago/Turabian Style

Pardal, A. C.; Ramos, S. S.; Santos, P. F.; Reis, L. V.; Almeida, P. 2002. "Synthesis and Spectroscopic Characterisation of N-Alkyl Quaternary Ammonium Salts Typical Precursors of Cyanines." Molecules 7, no. 3: 320-330.


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