Two contrasting ethynyl hydroboration pathways in the formation of a novel tris-hydroboration product from reaction of dimesitylborane with 2,5-diethynylpyridine.
Reaction of 2,5-diethynylpyridine with dimesitylborane, [(Mes)(2)BH](2)(Mes = mesityl = 2,4,6-Me(3)C(6)H(2)), gave the unexpected tris-hydroboration product 1-[(Mes)(2)B]-2-[Z-1-[(Mes)(2)B]ethylidene]-5-[E-[(Mes)(2)B]vinyl]-1,2-dihydropyridine, which has been structurally characterised by single-crystal X-ray diffraction.
Entwistle
Christopher D
CD
Department of Chemistry, University of Durham, South Road, Durham, UK DH1 3LE.
Batsanov
Andrei S
AS
Howard
Judith A K
JA
Fox
Mark A
MA
Marder
Todd B
TB