Palladium complexes with ethylene-bridged bis( N-heterocyclic carbene) for C–C coupling reactions

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) com...

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Published inTetrahedron Vol. 60; no. 27; pp. 5807 - 5825
Main Authors Lee, Hon Man, Lu, Chi Ying, Chen, Chih Yuan, Chen, Wen Ling, Lin, Hung Ching, Chiu, Pei Ling, Cheng, Pi Yun
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 28.06.2004
Elsevier
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Summary: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. Graphic
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2004.04.070