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Issue 21, 2011
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Nitrogen cation–π interactions in asymmetric organocatalytic synthesis

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Abstract

Cation–π interactions have been widely exploited and utilised in the structural biology arena, their fundamental importance in supramolecular chemistry and the pivotal role they play in host guest chemistry has rapidly expanded. In terms of organic synthesis π–π, CH–π and cation–π interactions are often invoked providing hypotheses for observed selectivities and reaction outcomes although fundamental studies of these interactions are less well reported, especially in the organic synthesis arena. This article considers cation–π interactions in the field of asymmetric organocatalysis and provides a summary of cases where such interactions may play an important role. Importantly this article sets out to highlight where such interactions could be operating in order to highlight the potential wealth of investigations to be had in this area rather than categorically claiming such interactions are in operation. For asymmetric catalysis this is particularly important as the geometry of a transition state dictates the stereochemical outcome of the reaction, this article provides a perspective on such phenomena.

Graphical abstract: Nitrogen cation–π interactions in asymmetric organocatalytic synthesis

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Article information


Submitted
13 Feb 2011
Accepted
19 Apr 2011
First published
16 Jun 2011

Org. Biomol. Chem., 2011,9, 7275-7281
Article type
Perspective

Nitrogen cation–π interactions in asymmetric organocatalytic synthesis

S. Yamada and J. S. Fossey, Org. Biomol. Chem., 2011, 9, 7275
DOI: 10.1039/C1OB05228D

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