Efficient Z-Selective Semihydrogenation of Internal Alkynes Catalyzed by Cationic Iron(II) Hydride Complexes
Nikolaus Gorgas, Julian Brünig, Berthold Stöger, Stefan Vanicek, Mats Tilset, Luis F. Veiros and Karl Kirchner*
*Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria, Email: karl.kirchnertuwien.ac.at
N. Gorgas, J. Brünig, B. Stöger, S. Vanicek, M. Tilset, L. F. Veiros, K. Kirchner, J. Am. Chem. Soc., 2019, 141, 17322-17330.
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A bench-stable cationic bis(σ-B-H) aminoborane iron complex efficiently catalyzes the semihydrogenation of internal alkynes, 1,3-diynes and 1,3-enynes. The catalytic reaction takes place under mild conditions in 1 h, and alkenes were obtained with high Z-selectivity for a broad scope of substrates.
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