N-alkyl-6,7-dihydroxy benzimidazolium salts

Details N-alkyl-6,7-dihydroxy benzimidazolium salts N-alkyl-6,7-dihydroxy benzimidazolium salts

1989-07-24

1991-03-12

Daus, Donald G.

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548333, 544113, 514261, 514 45, C07D23506

Patent

active

049994352

ABSTRACT:
The synthesis of 7-n-alkyl-imidazolium [4,5-d]-pyrimidines, 6-substituted-3n-alkyl-benzimidazolium- and 3n-alkyl-5,6-substituted-benzthiazolium salts are described. These N.sup.+ -surfactants having a substituted heterocycle as a head group have distinguished small critical micelle concentrations (CMC) in the range of 10.sup.-5 -10.sup.-7 Mol/Liter. The size and shape of these micelles in watery solutions are determined by the nature of the anion. The N-surfactants can be used as pharmaceuticals as well as reporter groups in fluorescence studies including immunological assays.

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Weinberger et al, Jour. Org. Chem., vol. 24, No. 9, pp. 1451-1455 (1959).

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