Hydroboration of Phosphaalkynes by HB(C6F5)2

Lauren E. Longobardi, Timothy C. Johnstone, Rosalyn L. Falconer, Christopher A. Russell, Douglas W. Stephan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The hydroboration of phosphaalkynes with Piers’ borane (HB(C6F5)2) generated unusual phosphaalkenylboranes [RCH=PB(C6F5)2]2that persisted as dimers in both solution and the solid state. These P2B2heterocycles underwent ring opening when subjected to nucleophiles, such as pyridine and tert-butylisocyanide, to yield monomeric phosphaalkenylborane adducts RCH=PB(C6F5)2(L). DFT calculations were performed to probe the nature of the interaction of phosphaalkynes with boranes.

Original languageEnglish
Pages (from-to)12665-12669
Number of pages5
JournalChemistry - A European Journal
Issue number36
Publication statusPublished - 5 Jul 2016


  • heterocycles
  • hydroboration
  • phosphaalkene
  • phosphaalkenylborane
  • phosphaalkyne


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