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Issue 27, 2015
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Homochiral coordination cages assembled from dinuclear paddlewheel nodes and enantiopure ditopic ligands: syntheses, structures and catalysis

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Abstract

A series of homochiral metal–organic cages (MOCs) have been obtained from self-assembly of Cu(II) salts with chiral N,N′-(bicyclo[2,2,2]oct-7-ene-tetracarboxylic)-bis-amino acids. Single-crystal X-ray diffraction analyses reveal that these compounds show a lantern-type cage structure, in which one pair of Cu2(CO2)4 paddlewheels is linked by four diacid ligands. The resulting homochiral cages have been fully characterized by EA, TOF-MS, TGA, VTPXRD, IR, UV, and CD measurements. The catalytic tests reveal that these Cu(II) cages are effective in cyclopropanation with excellent diastereoselectivity (up to 99 : 1 E/Z). In addition, the cage catalysts can promote the aziridination reaction with PhI[double bond, length as m-dash]NNs.

Graphical abstract: Homochiral coordination cages assembled from dinuclear paddlewheel nodes and enantiopure ditopic ligands: syntheses, structures and catalysis

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Supplementary files

Article information


Submitted
10 Dec 2014
Accepted
19 Feb 2015
First published
19 Feb 2015

Dalton Trans., 2015,44, 12180-12188
Article type
Paper

Homochiral coordination cages assembled from dinuclear paddlewheel nodes and enantiopure ditopic ligands: syntheses, structures and catalysis

L. Chen, J. Kang, H. Cui, Y. Wang, L. Liu, L. Zhang and C. Su, Dalton Trans., 2015, 44, 12180
DOI: 10.1039/C4DT03782K

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