Collection of Czechoslovak Chemical Communications p. 1342 - 1354 (1997)
Update date:2022-08-11
Topics:
Cibulka, Radek
Dvorak, David
Hampl, Frantisek
Liska, Frantisek
N-Hexyl-(2a), N-octyl-(2b), N-decyl-(2c) and N-dodecyl-N-[2-(hydroxyimino)-2-(pyridin-2-yl)-ethyl]dimethylammonium (2d) nitrates were synthesized as water-soluble cationic ligand surfactants. Three types of micellar catalytic systems employing salts 2 were prepared: homomicellar water solutions of salts 2, comicellar solutions of salts 2 wilh an inert cationic tenside hexadecyltrimethylammonium bromide (CTAB) and comicellar systems consisting of complexes of ligand surfactants 2 with transition metal ions (Co(II), Ni(II), Cu(II) and Zn(II)) and CTAB. Hydrolytic efficiency of all micellar and metallomicellar systems was tested by measuring the kinetics of the model substrate cleavage under pseudo-firsl-order reaction conditions. Of the above-mentioned catalysts, comicellar systems of salts 2 comicellized with CTAB were most efficient. In all cases, with the exception of Zn(II), coordination of a metal ion decreased the hydrolytic efficiency of salts 2.
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