Please use this identifier to cite or link to this item: https://doi.org/10.1002/asia.200800177
Title: Mono-and dinuclear palladium(II) N,S-heterocyclic carbene complexes with N spacers and their Suzuki coupling activities
Authors: Swee, K.Y. 
Lip, L.K. 
Han, V.H. 
Hor, T.S.A. 
Keywords: C-C coupling
Carbenes
Ligand effects
Palladium
PEPPSI
Issue Date: 1-Sep-2008
Citation: Swee, K.Y., Lip, L.K., Han, V.H., Hor, T.S.A. (2008-09-01). Mono-and dinuclear palladium(II) N,S-heterocyclic carbene complexes with N spacers and their Suzuki coupling activities. Chemistry - An Asian Journal 3 (8-9) : 1649-1656. ScholarBank@NUS Repository. https://doi.org/10.1002/asia.200800177
Abstract: Mixed-ligand N,S-heterocyclic carbene (NSHC) complexes, trans-[PdBr 2(NSHC)(Py)] (NSHC=3-benzyl-or 3-propyl-benzothiazolin-2-ylidene), have been obtained from bridge-cleavage reactions of the dinuclear complex, [Pd(m-Br)Br(NSHC)]2, in pyridine at room temperature. Use of neutral N-bidentate donors (L=pyrazine, 1,2-bis(4-pyridyl)ethane, 4,4′-bipyridine and trans-1,2-bis(4-pyridyl)-ethylene) yields the dinuclear spacer-bridged [Pd2Br4(NSHC)2(μ-L)] complexes. The X-ray single-crystal structures of the pyridyl, bridging pyrazine and 1,2-bis(4-pyridyl)ethane complexes are reported. These air-stable complexes are active in the Suzuki-Miyaura coupling reactions of selected aryl bromides. The dinuclear complexes are generally more active than their mononuclear pyridyl analogues. The benzyl derivatives consistently outperform the n-propyl counterparts. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
Source Title: Chemistry - An Asian Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/94321
ISSN: 18614728
DOI: 10.1002/asia.200800177
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