Palladium(II)‐Catalyzed C-H Activation/C-C Cross‐Coupling Reactions: Versatility and Practicality
Top Cited Papers
- 25 June 2009
- journal article
- review article
- Published by Wiley in Angewandte Chemie
- Vol. 48 (28), 5094-5115
- https://doi.org/10.1002/anie.200806273
Abstract
Pick your Pd partners: A number of catalytic systems have been developed for palladium‐catalyzed CH activation/CC bond formation. Recent studies concerning the palladium(II)‐catalyzed coupling of CH bonds with organometallic reagents through a PdII/Pd0 catalytic cycle are discussed (see scheme), and the versatility and practicality of this new mode of catalysis are presented. Unaddressed questions and the potential for development in the field are also addressed. In the past decade, palladium‐catalyzed CH activation/CC bond‐forming reactions have emerged as promising new catalytic transformations; however, development in this field is still at an early stage compared to the state of the art in cross‐coupling reactions using aryl and alkyl halides. This Review begins with a brief introduction of four extensively investigated modes of catalysis for forming CC bonds from CH bonds: PdII/Pd0, PdII/PdIV, Pd0/PdII/PdIV, and Pd0/PdII catalysis. A more detailed discussion is then directed towards the recent development of palladium(II)‐catalyzed coupling of CH bonds with organometallic reagents through a PdII/Pd0 catalytic cycle. Despite the progress made to date, improving the versatility and practicality of this new reaction remains a tremendous challenge.Keywords
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