Chemoselective semihydrogenation of alkynes catalyzed by manganese(i)-PNP pincer complexes

Marcel Garbe, Svenja Budweg, Veronica Papa, Zhihong Wei, Helen Hornke, Stephan Bachmann, Michelangelo Scalone, Anke Spannenberg, Haijun Jiao, Kathrin Junge, Matthias Beller

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47 Scopus citations


A general manganese catalyzed chemoselective semihydrogenation of alkynes to olefins in the presence of molecular hydrogen is described. The best results are obtained by applying the aliphatic Mn PNP pincer complex Mn-3c which allows the transformation of various substituted internal alkynes to the respective Z-olefins under mild conditions and in high yields. Mechanistic investigations based on experiments and computations indicate the formation of the Z-isomer via an outer-sphere mechanism.

Original languageEnglish
Pages (from-to)3994-4001
Number of pages8
JournalCatalysis Science and Technology
Issue number12
StatePublished - 21 Jun 2020
Externally publishedYes


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