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Effect of Lewis acids on the Diels–Alder reaction in ionic liquids with different activation modes
Author(s) -
Vidiš Ana,
Küsters Ernst,
Sedelmeier Gottfried,
Dyson Paul J.
Publication year - 2008
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.1293
Subject(s) - chemistry , catalysis , ionic liquid , selectivity , lewis acids and bases , yield (engineering) , diels–alder reaction , reaction rate , organic chemistry , molar ratio , alder , ionic bonding , inorganic chemistry , ion , thermodynamics , ecology , physics , biology
The Diels–Alder reaction has been examined in room temperature ionic liquids with high molar concentrations of Lewis acids under various conditions. A molar ratio of 10% catalyst gave a large increase in the selectivity and the yield of the reaction. The effect of catalysts on reaction rates was also examined under 100 MPa of pressure which leads to modest improvements in reaction rates. Ultrasound and microwave dielectric heating were also shown to improve the rate and, to a minor extent, selectivity of the examined reactions. Copyright © 2008 John Wiley & Sons, Ltd.