Selective molecular recognition, C-H bond activation, and catalysis in nanoscale reaction vessels

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Supramolecular chemistry represents a way to mimic enzyme reactivity by using specially designed container molecules. We have shown that a chiral self-assembled M{sub 4}L{sub 6} supramolecular tetrahedron can encapsulate a variety of cationic guests, with varying degrees of stereoselectivity. Reactive iridium guests can be encapsulated and the C-H bond activation of aldehydes occurs, with the host cavity controlling the ability of substrates to interact with the metal center based upon size and shape. In addition, the host container can act as a catalyst by itself. By restricting reaction space and preorganizing the substrates into reactive conformations, it accelerates the sigmatropic ... continued below

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34 pages

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Fiedler, Dorothea; Leung, Dennis H.; Raymond, Kenneth N. & Bergman, Robert G. November 27, 2004.

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Description

Supramolecular chemistry represents a way to mimic enzyme reactivity by using specially designed container molecules. We have shown that a chiral self-assembled M{sub 4}L{sub 6} supramolecular tetrahedron can encapsulate a variety of cationic guests, with varying degrees of stereoselectivity. Reactive iridium guests can be encapsulated and the C-H bond activation of aldehydes occurs, with the host cavity controlling the ability of substrates to interact with the metal center based upon size and shape. In addition, the host container can act as a catalyst by itself. By restricting reaction space and preorganizing the substrates into reactive conformations, it accelerates the sigmatropic rearrangement of enammonium cations.

Physical Description

34 pages

Notes

OSTI as DE00840989

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  • Journal Name: Accounts of Chemical Research; Journal Volume: 38; Journal Issue: 4; Other Information: Submitted to Accounts of Chemical Research: Volume 38, No.4; Journal Publication Date: 04/2005

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  • Report No.: LBNL--56853
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 840989
  • Archival Resource Key: ark:/67531/metadc785276

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  • November 27, 2004

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • April 4, 2016, 2:23 p.m.

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Fiedler, Dorothea; Leung, Dennis H.; Raymond, Kenneth N. & Bergman, Robert G. Selective molecular recognition, C-H bond activation, and catalysis in nanoscale reaction vessels, article, November 27, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc785276/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.