000105209 001__ 105209
000105209 005__ 20181114181957.0
000105209 0247_ $$2doi$$a10.5075/epfl-thesis-3871
000105209 02470 $$2urn$$aurn:nbn:ch:bel-epfl-thesis3871-6
000105209 02471 $$2nebis$$a5381205
000105209 037__ $$aTHESIS_LIB
000105209 041__ $$aeng
000105209 088__ $$a3871
000105209 245__ $$aInvestigations of Diels-Alder reactions in ionic liquids
000105209 269__ $$a2007
000105209 260__ $$aLausanne$$bEPFL$$c2007
000105209 300__ $$a165
000105209 336__ $$aTheses
000105209 502__ $$aLothar Helm, Sergey Katsyuba, Thomas Welton
000105209 520__ $$aRoom temperature ionic liquids comprise an unique class of solvent composed of organic and inorganic-based ions that are molten under ambient conditions. They are characterised by high solvent polarity and low vapour pressure, and can be tailored to have specific physical and chemical properties. Consequently, there has been great interest in exploiting these attributes to accelerate and control organic reactions. One such reaction, the Diels-Alder reaction, is an important [4+2] cycloaddition reaction used extensively in the preparation of cyclic and heterocyclic compounds. Understanding the factors involved in the enhancing this reaction in ionic liquids remains a subject of intense interest and the centrepiece of the dissertation. The objective of the research is to explore the Diels-Alder cycloaddition reaction in ionic liquids, with a view of developing high effective reactions systems, that operate under mild reaction conditions. The role that ionic liquid media plays in facilitating the Diels-Alder reaction is discussed. A range of physical and chemical modes of activating the reaction are discussed including pressure, the application of Lewis acid catalysts, microwave irradiation and ultrasound sonication and a comparison on the various modes of activation is provided. Importantly, the results of this study can lead to a better understanding of the ionic liquids as well as their utilization for other organic reactions.
000105209 6531_ $$aIonic liquids
000105209 6531_ $$aDiels-Alder reaction
000105209 6531_ $$ahigh pressure
000105209 6531_ $$aLewis acids
000105209 6531_ $$amicrowave irradiation
000105209 6531_ $$aultrasound effect
000105209 6531_ $$aliquides ioniques
000105209 6531_ $$aréaction de Diels-Alder
000105209 6531_ $$apression
000105209 6531_ $$aacide de Lewis
000105209 6531_ $$airradiation micro-ondes
000105209 6531_ $$aultrason
000105209 700__ $$0240282$$aVidis, Ana$$g157884
000105209 720_2 $$0240015$$aDyson, Paul Joseph$$edir.$$g149418
000105209 8564_ $$s2655940$$uhttps://infoscience.epfl.ch/record/105209/files/EPFL_TH3871.pdf$$yTexte intégral / Full text$$zTexte intégral / Full text
000105209 909C0 $$0252010$$pLCOM$$xU9
000105209 909CO $$ooai:infoscience.epfl.ch:105209$$pDOI$$pSB$$pthesis$$pthesis-bn2018$$qDOI2
000105209 918__ $$aSB$$cISIC$$dEDCH
000105209 919__ $$aLCOM
000105209 920__ $$a2007-8-17$$b2007
000105209 970__ $$a3871/THESES
000105209 973__ $$aEPFL$$sPUBLISHED
000105209 980__ $$aTHESIS