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Effect of Lewis acids on the Diels–Alder reaction in ionic liquids with different activation modes.

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Title: Effect of Lewis acids on the Diels–Alder reaction in ionic liquids with different activation modes.
Authors: Vidiš, Ana1, Küsters, Ernst2, Sedelmeier, Gottfried2, Dyson, Paul J.1 paul.dyson@epfl.ch
Source: Journal of Physical Organic Chemistry. Apr2008, Vol. 21 Issue 4, p264-270. 7p. 1 Diagram, 4 Charts, 1 Graph.
Subjects: Diels-Alder reaction, Chemical kinetics, Ionic liquids, Lewis acids, Acid-base chemistry, Dielectric heating
Abstract: 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. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Physical Organic Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of Lewis acids on the Diels–Alder reaction in ionic liquids with different activation modes.
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  Data: <searchLink fieldCode="AR" term="%22Vidiš%2C+Ana%22">Vidiš, Ana</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Küsters%2C+Ernst%22">Küsters, Ernst</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sedelmeier%2C+Gottfried%22">Sedelmeier, Gottfried</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Dyson%2C+Paul+J%2E%22">Dyson, Paul J.</searchLink><relatesTo>1</relatesTo><i> paul.dyson@epfl.ch</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Physical+Organic+Chemistry%22">Journal of Physical Organic Chemistry</searchLink>. Apr2008, Vol. 21 Issue 4, p264-270. 7p. 1 Diagram, 4 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Diels-Alder+reaction%22">Diels-Alder reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+liquids%22">Ionic liquids</searchLink><br /><searchLink fieldCode="DE" term="%22Lewis+acids%22">Lewis acids</searchLink><br /><searchLink fieldCode="DE" term="%22Acid-base+chemistry%22">Acid-base chemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+heating%22">Dielectric heating</searchLink>
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  Label: Abstract
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  Data: 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. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Physical Organic Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/poc.1293
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 264
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      – SubjectFull: Diels-Alder reaction
        Type: general
      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: Ionic liquids
        Type: general
      – SubjectFull: Lewis acids
        Type: general
      – SubjectFull: Acid-base chemistry
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      – SubjectFull: Dielectric heating
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      – TitleFull: Effect of Lewis acids on the Diels–Alder reaction in ionic liquids with different activation modes.
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              M: 04
              Text: Apr2008
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              Y: 2008
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