Selective Transfer Semihydrogenation of Alkynes with Nanoporous Gold Catalysts
Yogesh S. Wagh and Naoki Asao*
*WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan, Email: asaom.tohoku.ac.jp
Y. S. Wagh, N. Asao, J. Org. Chem., 2015, 80, 847-851.
DOI: 10.1021/jo502313d (free Supporting Information)
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The use of unsupported nanoporous gold (AuNPore) as a heterogeneous catalyst enables a facile, highly chemo- and stereoselective transfer semihydrogenation of alkynes to Z-olefins in the presence of formic acid as a hydrogen donor. Various alkynes were reduced to the corresponding alkenes in high chemical yields with good functional-group tolerance. The catalyst is robust enough to be reused without leaching.
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