Alkene Isomerization–Hydroboration Promoted by Phosphine-Ligated Cobalt Catalysts
2015
Scheuermann, Margaret L. | Johnson, Elizabeth J. | Chirik, Paul J.
Generated in situ from air-stable cobalt precursors or readily synthesized using NaHBEt₃, (PPh₃)₃CoH(N₂) was found to be an effective catalyst for the hydroboration of alkenes. Unlike previous base-metal catalysts for alkene isomerization–hydroboration which favor the incorporation of boron at terminal positions, (PPh₃)₃CoH(N₂) promotes boron incorporation adjacent to π-systems even in substrates where the alkene is at a remote position, enabling a unique route to 1,1-diboron compounds from α,ω-dienes.
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