Normal and abnormal carbene complexes derived from thiazole: Preparation and a preliminary investigation of their relative catalytic performance

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dc.contributor.authorStander-Grobler E.
dc.contributor.authorSchuster O.
dc.contributor.authorStrasser C.E.
dc.contributor.authorAlbrecht M.
dc.contributor.authorCronje S.
dc.contributor.authorRaubenheimer H.G.
dc.date.accessioned2011-10-13T16:59:08Z
dc.date.available2011-10-13T16:59:08Z
dc.date.issued2011-10-13
dc.description.abstractReadily prepared 2-, 4- and 5-bromo-3-methyl thiazolium triflates react by oxidative substitution with M(PPh3)4 (M = Ni or Pd) to furnish five of the expected normal and abnormal cationic thiazolylidene complexes (1a, 1b, 2a, 2b, and 3b). Carbene complex formation is accompanied by a ca. 40 ppm downfield shift of the α-N carbene carbons in Pd complexes 1 and 2 in their 13C NMR spectra but the chemical shift of C(carbene) in the abnormal 3b (δ 135.7) is particularly low. Crystal and molecular structures of complexes 1a, 2b, and 3b all indicate a square planar arrangement of the ligands around the central metal atoms. The new complexes catalyse Suzuki-Miyaura aryl coupling. © 2011 Elsevier Ltd. All rights reserved.
dc.description.versionArticle in Press
dc.identifier.citationPolyhedron
dc.identifier.citationhttp://www.scopus.com/inward/record.url?eid=2-s2.0-80052779728&partnerID=40&md5=2b63e553cf6bf57bce4d2223f5af4d64
dc.identifier.issn2775387
dc.identifier.other10.1016/j.poly.2011.07.028
dc.identifier.urihttp://hdl.handle.net/10019.1/16995
dc.titleNormal and abnormal carbene complexes derived from thiazole: Preparation and a preliminary investigation of their relative catalytic performance
dc.typeArticle in Press
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