Journal
APPLIED CATALYSIS A-GENERAL
Volume 394, Issue 1-2, Pages 191-194Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2010.12.039
Keywords
Reverse micelles; Aromatic fluorination; Cyclohexyl BrettPhos; [CinnamylPdCl](2)
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Funding
- Rhodes University Joint Research Committee (JRC) [35047]
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In this study, we used reverse micellar medium for overcoming the disadvantages of ArLMF catalytic fluorination of aromatic compounds. It not only enhanced the fluorination rate, but also widened the scope of reaction for bromoaromatics with electron donating and withdrawing functionalities at ortho position. Various bromoaromatic compounds were fluorinated using the biarylphosphine ligand i.e. cyclohexyl BrettPhos ligand, along with [cinnamylPdCl](2), and CsF as the fluoride source in reverse micellar media. The anisotropic palisade layer of reverse micelles provided the active site for reaction. The most crucial factor in the critical reductive elimination step could be the spatial orientation of ArLPdF complex in the palisade layer: forming ArF as the final product in high yield with excellent selectivity. (C) 2011 Elsevier B.V. All rights reserved.
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