Diimidazolium salts featuring different bridges between the imidazolium groups, as well as electron-withdrawing groups (chloride, cyanide) at the 4- and 5-position of the heterocyclic rings, have been successfully prepared. The diimidazolium salts serve as convenient precursors of di(N-heterocyclic carbene) ligands, which coordinate in a chelating fashion to palladium(II) centres. The effect of the newly introduced electron-withdrawing groups on the spectroscopic and structural characteristics of the resulting complexes as well as on their reactivity as catalysts in a model alkyne hydroarylation reaction has been investigated and is discussed herein.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:36120 |
| Date | 19 December 2019 |
| Creators | Pinter, Piermaria, Biffis, Andrea, Tubaro, Cristina, Tenne, Mario, Kaliner, Maria, Strassner, Thomas |
| Publisher | Royal Society of Chemistry |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 1477-9234, 10.1039/c5dt01067e |
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