Issue 5, 2018

The hexameric resorcinarene capsule as an artificial enzyme: ruling the regio and stereochemistry of a 1,3-dipolar cycloaddition between nitrones and unsaturated aldehydes

Abstract

When a 1,3-dipolar cycloaddition between nitrones and α,β-unsaturated aldehydes catalyzed by L-proline derivatives takes place inside the hexameric resorcin[4]arene capsule the products are obtained in higher yields and selectivity, with respect to the reaction in bulk solution. The 4-formyl regioisomers were obtained preferentially, with an excellent preference for the endo-diastereoisomers and with moderate to good enantioselectivities. An extended in silico study was conducted to rationalize the observed outcome and to investigate the equilibria between the reagents outside and inside the capsule.

Graphical abstract: The hexameric resorcinarene capsule as an artificial enzyme: ruling the regio and stereochemistry of a 1,3-dipolar cycloaddition between nitrones and unsaturated aldehydes

Supplementary files

Article information

Article type
Research Article
Submitted
16 out 2017
Accepted
23 nov 2017
First published
27 nov 2017

Org. Chem. Front., 2018,5, 827-837

The hexameric resorcinarene capsule as an artificial enzyme: ruling the regio and stereochemistry of a 1,3-dipolar cycloaddition between nitrones and unsaturated aldehydes

P. La Manna, M. De Rosa, C. Talotta, C. Gaeta, A. Soriente, G. Floresta, A. Rescifina and P. Neri, Org. Chem. Front., 2018, 5, 827 DOI: 10.1039/C7QO00942A

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