Ionic Liquid and Multicomponent Reaction Thesis Example | Topics and Well Written Essays - 750 words

Ionic Liquid and Multicomponent Reaction - Thesis Example Among the many chemical species whose reactions can be catalyzed by variants of this method include ketones, and alcohols. Ionic liquids oxidize alcohols faster than conventional solvents, (7), (14) and are useful for both ÃŽ ±,ÃŽ ²-unsaturated ketones, (15) and diketone derivatives. (16), (17), (18)   , (19)  Ã‚   Of course, multi-component reactions involving these, or aldehydes, amines, carboxylic acids and isocyanides are typical of an Ugi reaction. The isocyanides themselves being critical to the four-component reaction. (20)   As well as being central to Passerini-type reactions. (4)   In addition, ionic liquids are useful for isomerizations, sugar acetylation, (21) the Baylis-Hillman reaction, (22) other high-temperature organic syntheses, given high thermal stability. (When dicationic) (23)   Within Ionic liquids, yields can be relatively high for stereochemistry-retained vinyl chalcogenides, (24) and N-substitution of alkyl halides, and various chlorides. (25)   Just a few of the reactions possible with ionic liquid multi-component processes are listed below: Alkylation, The Michael reaction, Knoevenagel condensation, and at least four others, not to mention both two-step, and multicomponent domino reactions, for a start. (13)   Ionic liquids are superior in the carbonylation of some halides. (26)   Several sources discuss these reactions in terms of efficiency, and the lessening of environmental impact. (16), (13).