Cetylpyridinium chloride

Abstract

Synthesis of Nanostructures A facile method for the synthesis of Au@Pd nanostructures with controlled sizes and morphologies using gold nanospheres as seeds and CPC as a surfactant was reported. The use of CPC is critical to generate a Au@Pd nanostructure with a flower-like morphology.8b Palladium nanoparticles stabilized by polystyrene (PS)co-poly- (ethyleneoxide) (PEO) and cetylpyridinium chloride were shown to be a very good catalyst in Heck reactions and the heterocyclization of N-methylsulfonyl o-iodoaniline with phenylacetylene to form substituted indoles.8 c CetylpyridiniumAcesulfame Complex Novel complex compounds, which shown great antimicrobic activity and also can find potential application as feeding deterrents, were synthesized from potassium acesulfame, saccharine, and cyclamate on CPC in non-aqueous media. 15Reactions with Complex Metal-Containing Anions Li and co-workers constructed a LangmuirBlodgett film from the complex of cetylpyridiniumcadmium(1,3-dithiole-2-thione-4,5-dithiolate) , which was synthesized from 4,5-bis(benzoylthio)-1,3-dithiole- 2-thione, sodium methylate, cadmium chloride, and CPC at room temperature.16a CPC also reacts with beryllium- and cobaltcomplex anions.16b,cSynthesis of Acyloins Various acyloins were obtained in good yields and high regioselectivities by ketohydroxylation of 1-aryl-1-alkenes with H 2O2, catalyzed by the 12-tungstophosphoric acidcetylpyridinium chloride system.17Epoxidation of Alkenes The epoxidation of alkenes was successfully catalyzed by a recyclable and environmentally benign catalytic system consisting of CPWP, H2O 2, and solvent. CPWP was synthesized by the action of CPC on tungstophosphoric acid in a solution of hydrogen peroxide. 18 Modification of Drugs Novel compounds were designed by the reaction of CPC with drugs, including aspirin,19asulfathiazole,19b and triclosan,19c to obtain synergistic effects of the two ionic components. © Georg Thieme Verlag Stuttgart New York.