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Palladium complexes with ethylene-bridged bis(N-heterocyclic carbene) for C-C coupling reactions
被引:163
|作者:
Lee, HM
[1
]
Lu, CY
[1
]
Chen, CY
[1
]
Chen, WL
[1
]
Lin, HC
[1
]
Chiu, PL
[1
]
Cheng, PY
[1
]
机构:
[1] Natl Changhua Univ Educ, Dept Chem, Changhua 50058, Taiwan
来源:
关键词:
C-C coupling reactions;
chelating N-heterocyclic carbenes;
palladium(II) complexes;
D O I:
10.1016/j.tet.2004.04.070
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A series of new ethylene-bridged bis(imidazolium) halides with various N-substitutions were synthesized. Complexation of these imidazolium halides with Pd(OAc)(2) produced new Pd(II) ethylene-bridged bis(carbene) complexes. Crystallographic analyses of some of the new imidazolium salts and Pd(II) complexes were determined. Applications of these seven-member palladacycles in Suzuki and Heck coupling reactions produced comparable catalytic activities to those of six-member analogs. (C) 2004 Elsevier Ltd. All rights reserved.
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页码:5807 / 5825
页数:19
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