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Room Temperature Ionic Liqiuds-New Choline Derivatives

100%

Pernak J. , Chwała P. , Syguda A.

2004

tom Vol. 78 / nr 4

539-546

New room temperature ionic liquids - choline derivatives were prepared by Menschutkin reaction with alkyl chloromethyl ethers and anion changed to bis(trifluoromethylsulfonyl) amide ion. The newly obtained butoxymethyl(2-hydroxyethyl)dimethylammonium bis(trifluoromethanesulfonyl)amide was successfully tested as a solvent for O-acylation in two-phase reaction system. The ionic liquid-catalyst system was recycled and reused.

The Antielectrostatic Effect of N-Alkanol-N-alkoxymethyl-N,N-dimethylammonium Chlorides and Their Ester Derivatives

100%

Pernak J. , Chwała P. , Syguda A. , Poźniak R.

2003

tom Vol. 77 / nr 10

1263-1274

Several new quaternary ammonium chlorides, analogues of choline, were prepared by reaction of 2-(dimethylamino)ethanol and its derivatives with chloromethyl alkyl ethers. The obtained chlorides were examined in respect to their antielectrostatic effects: the surface resistance and half decay time on polyethylene film were measured. Application of rough set theory permitted to perform a comprehensive analysis of data and detection of structural-activity relationships. The obtained chlorides showed high antielectrostatic properties. The most active were quaternary ammonium chlorides with 11 and 12 carbon atoms in alkyl chain.