Reactivite des (F-alkyl-2 ethylthio)methanols : synthese de nouveaux agents tensio-actifs cationiques
作者:F. Marty、E. Bollens、E. Rouvier、A. Cambon
DOI:10.1016/s0022-1139(00)80436-4
日期:1990.6
Reaction of (2-F-alkyl ethylthio) methanols with phosphorus tribomide or trichloride leads to α-halogenated sulfides. These compounds, frequently described in hydrocarbon chemistry, are unknown when substituted by a F-alkyl group. New cationic surfactants are obtained by reaction of these halides with tertiary amines and phosphines. They are characterised by the presence of only one methylene group
A novel series of fluorinated quaternary bisammonium surfactants has been synthesized in view to optimize their antimicrobial activities against Pseudomonas aeruginosa. As compared with commercial references, most of the new surfactants synthesized exhibit an enhanced activity which is discussed as a function of the nature of the spacer group between the quaternized nitrogen atoms and of the nature of the connector function between the nitrogen atoms and the perfluorinated carbon chains. It appears that the fluorinated "Gemini" surfactants bearing an amide connector can be an interesting alternative to hydrocarbon ammonium salts as preservatives and disinfectants against R aeruginosa. (c) 2008 Elsevier Masson SAS. All rights reserved.