Chiral C 2 -Symmetric α-and ω-Diimines with Bulky Substituents at Nitrogen: Synthesis and Catalytic Properties of Some Copper Complexes

Two new C2-symmetric chiral $\alpha-$ and w-Diimines incorporating bulky ferrocenylethylamine and their copper(I)complexes have been synthesized and characterized by analytical and various spectroscopic techniques. The catalytic activities of these complexes have been tested in the asymmetric cyclop...

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Bibliographic Details
Published in:Bulletin of the Korean Chemical Society 2002, Vol.23 (5), p.721-726
Main Authors: Park, Dong-Kyu, Ryu, Eun-Sook, Paek, Seung-Hwan, Shim, Sang-Chul, Cho, Chan-Sik, Kim, Tae-Jeong
Format: Article
Language:Korean
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Summary:Two new C2-symmetric chiral $\alpha-$ and w-Diimines incorporating bulky ferrocenylethylamine and their copper(I)complexes have been synthesized and characterized by analytical and various spectroscopic techniques. The catalytic activities of these complexes have been tested in the asymmetric cyclopropanation of a series of olefins with some diazoacetates to achieve varying degree of dia- and enantio-selectivities depending on the nature of the ligand, the substrates, and the reagents. Some mechanistic implication has been made with regard to the interactions among all these chemical species.
ISSN:0253-2964
1229-5949