Tetradecyl pyridinium

N-tetradecyl pyridinium hexafluorophosphate 1107-51 N-hexadecyl pyridinium hexafluorophosphate... 

The formation of CdS particles beneath monolayers of A-methyl-p-(p-tetradecyl-oxystyryl)pyridinium iodide, a cationic surfactant with a hemicyanine portion was studied [144]. The monolayers were spread on a circular glass trough coated with paraffin, and the trough was covered by ajar. The CdCL subphase also contained EDTA, so the Cd was... 

Toxicity data for ILs are still generally lacking. However, B. JastorfFetal. have recently reported structure-activity relahonship data on acetylcholinesterase inhibition for various classes of ILs [67]. Their conclusions indicated that ILs which contain imidazolium and pyridinium cations with longer alkyl substituents have EC50 values as low as 13 pM, where as phosphonium ILs containing bulky phosphonium cations such as tetradecyl(trihexyl)phosphonium have EC50 values of > 2000 pM. 

Tanaka and his associates demonstrated for the first time how to use non-volatile ionic liquids (ILs) as solvents in palladium-catalyzed carbonylations [163], In the case of alkoxycarbonylation of bromobenzene, higher yields were obtained when 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] was used as the reaction medium compared with standard conditions. And the selectivity for the monocarb-onylation of iodobenzene with t -PrOH or Et2NH was significantly enhanced by [bmim][BF4]. After separation of the products, the solvent-catalyst system was easily recycled and exhibited catalytic activity up to seven times. Since then the replacement of traditional solvents with quaternary ammonium halides, imidazoli-um- or pyridinium-derived ILs has gained increasing importance [164—173]. Recently, the phosphonium salt IL trihexyl(tetradecyl)phosphonium bromide has proven to be an effective reaction medium for various carbonylation reactions of aryl and vinyl bromides or iodides under mild conditions (Scheme 2.17) [174]. 

Cyclic alkylammonium compounds resemble the linear products in their properties. They are widely found in antiseptic solutions, cremes, shampoos, and mouthwashes. As an example of this class of compounds. Fig. 6-49 displays the chromatogram of a dodecylpyridinium chloride. Its individual components, with the exception of the main component, exhibit a similar retention behavior to that of Benzalkon A. The minor components of this sample are presumably tetradecyl- and hexadecyl-pyridinium chloride. 

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