Synthesis of new imidazolium ionic liquids

U ovome diplomskom radu provedene su reakcije kvaternizacije imidazola, 2-fenilimidazola i 4-metilimidazola s alkil-halogenidom pri čemu je alkilni lanac (R) sadržavao 18 ugljikovih atoma, a za halogenid (X) uzet je bromid. Reakcije su se odvijale u bazičnim uvjetima uz acetonitril kao otapalo, u zatvorenoj inertnoj atmosferi dušika pri 100°C. Nakon reakcije kvaternizacije, dobiveni produkti korišteni su kao polazni spojevi za drugi korak u sintezi ionskih tekućina, točnije u reakcijama metateza. Ove reakcije provodile su se u zatvorenom sustavu pri sobnoj temperaturi i uz upotrebu odgovarajućih otapala. Uspješno je sintetizirano trinaest spojeva, od kojih su dva kvaterne amonijeve soli na bazi imidazola te 11 ionskih tekućina. Navedeni spojevi su karakterizirani infracrvenom spektroskopijom (IR) te masenom spektrometrijom (MS).In this thesis, quaternization reactions of imidazole, 2-phenylimidazole, and 4-methylimidazole were carried out. The compounds were quaternized with an alkyl halide which contained an 18 carbon atom alkyl chain (R) and bromide as the halide (X). The reactions were performed under basic conditions with acetonitrile as the solvent, under a closed inert nitrogen atmosphere at 100° C. After the quaternization, the obtained products were used as starting compounds for the second step in the synthesis of ionic liquids, more precisely in metathesis reactions. These reactions were carried out in a closed system at room temperature and with appropriate solvents. In the end, thirteen compounds were successfully synthesized: two imidazole-based quaternary ammonium salts and eleven ionic liquids. All obtained compounds have been characterized by infrared spectroscopy (IR) and mass spectrometry (MS)