Please use this identifier to cite or link to this item: https://doi.org/10.1021/om300464b
Title: Pyrazolin-5-ylidene palladium(II) complexes: Synthesis, characterization, and application in the direct arylation of pentafluorobenzene
Authors: Bernhammer, J.C.
Huynh, H.V. 
Issue Date: 23-Jul-2012
Citation: Bernhammer, J.C., Huynh, H.V. (2012-07-23). Pyrazolin-5-ylidene palladium(II) complexes: Synthesis, characterization, and application in the direct arylation of pentafluorobenzene. Organometallics 31 (14) : 5121-5130. ScholarBank@NUS Repository. https://doi.org/10.1021/om300464b
Abstract: Ten palladium(II) complexes bearing a pyrazolin-5-ylidene ligand have been synthesized by oxidative addition and silver carbene transfer pathways. The weakly bound acetonitrile ligand in the initially obtained trans-[PdBr 2(MeCN)(Pyry)] complex (6, Pyry = 1-phenyl-2,3-dimethylpyrazolin-5- ylidene) could be replaced by other donor ligands, and additional NHC ligands were introduced either by silver carbene transfer reactions or via reaction with in situ generated free carbenes. Using our previously reported 13C NMR-based electronic parameter, the pyrazolin-5-ylidene ligand is estimated to be among the most strongly donating ligands on our scale so far. The complexes obtained were employed as catalysts for the direct arylation of pentafluorobenzene with moderate to good yields under optimized conditions. © 2012 American Chemical Society.
Source Title: Organometallics
URI: http://scholarbank.nus.edu.sg/handle/10635/94636
ISSN: 02767333
DOI: 10.1021/om300464b
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