Preparation and characterization of 1,2-dimethylimidazolium quaternary salts (new ionic liquids)

undergraduate thesis

• Title: Priprema i karakterizacija kvaternih soli 1,2-dimetilimidazola (novih ionskih tekućina)
• Author: Andreja Jurič
• Mentor: Jasna Vorkapić-Furač (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Biochemical Engineering); (Laboratory for Cell Technology, Application and Biotransformations); Zagreb
• Defense date and country: 2010-09-09, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

Ionske tekućine su soli koje imaju nisko talište (<100 °C) te predstavljaju značajan potencijal za industrijsku primjenu kao “zelena“ zamjena za štetna hlapljiva organska otapala. Posebno se imidazolijeve ionske tekućine upotrebljavaju u širokom spektru zbog njihovih atraktivnih fizikalnih i kemijskih svojstava. U ovom je radu krajnji cilj bio sintetizirati nove kvaterne spojeve 1,2-dimetilimidazola. Ovi spojevi su pripravljeni reakcijom 1,2-dimetilimidazola s vodikovim peroksidom pri čemu je dobiven spoj 1,2-dimetilimidazol-N-oksid [1], koji je potom preveden u spojeve 1-butoksi-2,3-dimetilimidazolijev bromid [2] i 1-(2-hidroksietiloksi)-2,3-dimetilimidazolijev klorid [3]. Struktura novih, do sada neobjavljenih, spojeva [1]-[3] određena je pomoću podataka dobivenih IR-spektroskopijom te 1H- i 13C- nuklearno-magnetskom rezonancijom.

Abstract (english)

Ionic liquids are salts with low melting point (<100 °C) having enormous potential for industrial use as “green” replacements for harmful volatile organic solvents. Especially, imidazolium ionic liquids are used in a wide variety of applications due to their attractive physical and chemical properties. In this final work, the ultimate goal was the synthesis of new quaternary salts of 1,2-dimethylimidazole. These compounds are prepared by reaction of 1,2-dimethylimidazole with hydrogen peroxide into 1,2-dimethylimidazole-N-oxide [1] which was further transformed into compounds 1- butoxy-2,3-dimethylimidazolium bromide [2] and 1-(2-hydroxyethyloxy)-2,3- dimethyilimidazolium chloride [3]. Structures of novel, yet unpublished compounds [1]-[3] were determined according to the data obtained by IR-spectroscopy as well as 1H- and 13 C-nuclear magnetic resonance.

• Keywords: ionske tekućine; imidazolijeve soli; kvaternizacija; zelena otapala
• Keywords (english): “green solvents”; imidazolium salts; ionic liquids; quaternization
• Language: croatian
• URN:NBN: urn:nbn:hr:159:823785
• Study programme: Title: Biotehnologija; Study programme type: sveučilišni; Study level: preddiplomski; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Restricted access
• Created on: 2017-06-02 10:23:26