title: Hydroboration of Phosphaalkynes by HB(C6 F5 )2.
abstract: The hydroboration of phosphaalkynes with Piers' borane (HB(C6 F5 )2 ) generated unusual phosphaalkenylboranes [RCH=PB(C6 F5 )2 ]2 that persisted as dimers in both solution and the solid state. These P2 B2 heterocycles underwent ring opening when subjected to nucleophiles, such as pyridine and tert-butylisocyanide, to yield monomeric phosphaalkenylborane adducts RCH=PB(C6 F5 )2 (L). DFT calculations were performed to probe the nature of the interaction of phosphaalkynes with boranes.
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON, M5S 3H6, Canada.
authors.forename: Lauren E
authors.initials: LE
authors.lastname: Longobardi
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON, M5S 3H6, Canada.
authors.forename: Timothy C
authors.initials: TC
authors.lastname: Johnstone
authors.affiliation: School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
authors.forename: Rosalyn L
authors.initials: RL
authors.lastname: Falconer
authors.affiliation: School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Russell
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON, M5S 3H6, Canada. dstephan@chem.utoronto.ca.
authors.forename: Douglas W
authors.identifier: http://orcid.org/0000-0001-8140-8355
authors.initials: DW
authors.lastname: Stephan
keywords: heterocycles; hydroboration; phosphaalkene; phosphaalkenylborane; phosphaalkyne