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- W2895918295 abstract "There is currently significant interest in the development of efficient nickel precatalysts for cross-coupling. In this work, 14 nickel(II) precatalysts of the form (dppf)Ni(aryl)(X) (dppf = 1,1′-bis(diphenylphosphino)ferrocene, X = Cl, Br) were synthesized. In particular, both the electronic and steric properties of the aryl group were modified to understand how this affects precatalyst activation. Using EPR spectroscopy, it was demonstrated that the amount of off-cycle nickel(I) species which are formed via comproportionation during precatalyst activation varies depending on the nature of the aryl group. For example, sterically bulky aryl groups reduce comproportionation. Additionally, the catalytic activity of the family of precatalysts was evaluated in five different Suzuki–Miyaura coupling reactions. The results from these catalytic studies provide information about how precatalyst structure affects catalytic efficiency, which may be useful for the rational design of improved nickel precatalysts for cross-coupling." @default.
- W2895918295 created "2018-10-26" @default.
- W2895918295 creator A5030279099 @default.
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- W2895918295 creator A5064040856 @default.
- W2895918295 creator A5074183637 @default.
- W2895918295 date "2018-10-16" @default.
- W2895918295 modified "2023-10-14" @default.
- W2895918295 title "Modifications to the Aryl Group of dppf-Ligated Ni σ-Aryl Precatalysts: Impact on Speciation and Catalytic Activity in Suzuki–Miyaura Coupling Reactions" @default.
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- W2895918295 doi "https://doi.org/10.1021/acs.organomet.8b00589" @default.
- W2895918295 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6858066" @default.
- W2895918295 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31736532" @default.
- W2895918295 hasPublicationYear "2018" @default.
- W2895918295 type Work @default.