title: Metal-free Lewis acid mediated dehydrocoupling of phosphines and concurrent hydrogenation.
abstract: The stoichiometric reaction of trityl cation with two equivalents of Ph2PH affords the phosphine stabilized phosphenium salt [Ph2(H)PPPh2][B(C6F5)4] via hydride abstraction, while catalytic amounts of B(p-HC6F4)3 effects catalytic phosphine dehydrocoupling with the liberation of H2. This reaction is accelerated by the presence of olefin or imine, effecting concurrent hydrogenation.
authors.affiliation: Department of Chemistry, University of Toronto 80 St. George Street, Toronto, Ontario M5S 3H6, Canada. dstephan@chem.utoronto.ca.
authors.forename: Roman
authors.initials: R
authors.lastname: Dobrovetsky
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Takeuchi
authors.forename: Douglas W
authors.initials: DW
authors.lastname: Stephan