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Synlett 2009(19): 3167-3170
DOI: 10.1055/s-0029-1218311
DOI: 10.1055/s-0029-1218311
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Design and Synthesis of Chiral Imidazolidine-Pyridine Ligands
Further Information
Received
3 September 2009
Publication Date:
23 October 2009 (online)
Publication History
Publication Date:
23 October 2009 (online)

Abstract
Condensation of chiral diamines and aldehydes gave a series of chiral imidazolidine-pyridine compounds with high diastereoselectivities. The ability of these compounds to act as chiral ligands was examined in the catalytic Henry reaction.
Key words
asymmetric catalysis - ligands - imidazolidine - copper - Henry reaction
- Supporting Information for this article is available online:
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References and Notes
Crystal Data
Orthorhombic,
space group: P2 (1)2 (1)2 (1), a = 6.3601
(3), b = 8.1108
(4), c = 50.351
(3), V = 2597.4
(2), Z = 4,
MoKα radiation, R
1 = 0.0456, wR
2 = 0.1458.
The MS value of m/z = 997.29 was also detected for [(L2b)2 - Cu]+. Although the mixing ratio of L2b and Cu(OAc)2 was reexamined to superior formation of the 1:1 complex, the ee of the Henry adduct was not improved.