A new group of imidazolium salt-based chiral ionic liquids have been prepared and characterized The chiral ionic liquids obtained are stable in air in contact with water and popular organic solvents Their physicochemical properties single-crystal X-ray structures antimicrobial activities and antielectrostatic effects have been determined The chiral ionic liquids synthesized have proven to represent not only potential new solvents in asymmetric synthesis but also effective disinfectants with antielectrostatic activity (C) 2010 Elsevier Ltd All rights reserved
The effect of the cationic structures of chiral ionic liquids on their antimicrobial activities
作者:Joanna Feder-Kubis、Krzysztof Tomczuk
DOI:10.1016/j.tet.2013.03.107
日期:2013.5
In this study the significant effect of the cationic structures of ionic liquids on their antimicrobial efficacy has been shown. An analysis has been made for the structure of ammonium, alkylimidazolium, alkoxymethylimidazolium, and pyridinium chiral ionic liquids. The cationic structures of the discussed chiral ionic liquids and commonly used benzalkonium chloride were ranked in terms of antimicrobial activity. The broadest and the strongest spectrum of activities against microbes represent ammonium chlorides. Alkylimidazolium and alkoxymethylimidazolium chlorides exhibit activities also higher than the ones shown by benzalkonium chloride. These compounds can be successfully applied in antisepsis and disinfection. Contained in the structures of discussed chlorides chiral pool of (1R,2S,5R)-(-)-menthol has significant impact on strengthening the biological activity of CILs. Several chlorides with (+/-)-menthol derivative have been synthesized and their biological activity has been estimated. The racemic counterparts are much less effective than the optically active chlorides. (C) 2013 Elsevier Ltd. All rights reserved.
Ionic Liquids with Symmetrical Dialkoxymethyl-Substituted Imidazolium Cations
A new one-step procedure is described for the synthesis of disubstituted imidazolium chlorides. 1,3-Dialkoxymethylimidazolium chlorides thus obtained can be employed as synthetic precursors of symmetrical ILs. The salts have been found to exhibit antimicrobial activity and an antielectrostatic effect. Their densities and viscosities have been determined and are reported herein. It has also been demonstrated