The highly Lewis acidic dicationic phosphonium salt: [(SIMes)PFPh₂][B(C₆F₅)₄]₂.
The dicationic imidazolium-phosphonium salt [(SIMes)PFPh2][B(C6F5)4]2 has been prepared and shown to exhibit remarkable Lewis acidity in stoichiometric reactions and acting as an effective Lewis acid catalyst for the hydrodefluorination of fluoroalkanes and the hydrosilylation of olefins.
Department of Chemistry, University of Toronto, 80 St. George St, Toronto Ontario M5S3H6 (Canada).
Michael H
MH
Holthausen
Meera
M
Mehta
Douglas W
DW
Stephan
Lewis acids; carbene ligands; hydrodefluorination; hydrosilylation; phosphonium salts