Journal
DALTON TRANSACTIONS
Volume 44, Issue 27, Pages 12180-12188Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4dt03782k
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Funding
- 973 Program [2012CB821701]
- NSFC [21373278, 21102186, 91222201, 21173272, 21450110063]
- NSF of Guangdong Province [S2013030013474]
- RFDP of Higher Education of China [20120171130006]
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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 Cu-2(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=NNs.
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