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Chiral bisimidazolium salts derived from amino acids and their palladium(II)- and platinum(II)-biscarbene complexes
被引:34
|作者:
Meyer, Anke
[1
]
Taige, Maria A.
[1
]
Strassner, Thomas
[1
]
机构:
[1] Tech Univ Dresden, D-01062 Dresden, Germany
关键词:
Chiral bisimidazolium salts;
Amino acids;
N-heterocyclic carbene metal complexes;
Palladium;
Platinum;
Solid state structure;
N-HETEROCYCLIC CARBENES;
METAL-COMPLEXES;
STEREODIRECTING LIGANDS;
STRUCTURAL-CHARACTERIZATION;
ASYMMETRIC HYDROGENATION;
BISCARBENE COMPLEXES;
CATALYZED REACTIONS;
CONJUGATE ADDITION;
IONIC LIQUIDS;
METHANE;
D O I:
10.1016/j.jorganchem.2009.01.036
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
We report new chiral bisimidazolium salts synthesized from naturally occurring L-amino acids. They served as precursors for bidentate N-heterocyclic carbene metal complexes. The chiral imidazoles could be synthesized in good yields via a one-pot ring closing reaction, followed by esterification. The methylene bridged bisimidazolium iodide salts are accessible in moderate yields. Corresponding palladium(II) and platinum(II)-NHC complexes could be synthesized and fully characterized, but do not show optical activity. We also report a solid state structure of one of the synthesized palladium(II) biscarbene compounds derived from alanine. (C) 2009 Elsevier B.V. All rights reserved.
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页码:1861 / 1868
页数:8
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