Selective hydrogenation of alkynes catalyzed by trinuclear rhodium hydride complexes of the type [{(Rh[PP]H)32-H)33-H)}(BF4)2]

Christina Kohrt, Gerrit Wienhöfer, Cornelia Pribbenow, Matthias Beller, Detlef Heller

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A clean win: A novel trinuclear rhodium(III)-hydride species allows for highly selective hydrogenation of diarylacetylenes under mild conditions (1bar of hydrogen pressure at 30.0°C in methanol) with low catalyst loadings (substrate/catalyst molar ratio≤10000). In contrast to the mononuclear complex of the type [{Rh(PPz.ast;)(MeOH)2}BF4], no overhydrogenation of the diphenylacetylene to the alkane is observed. The hydrogen consumption follows Michaelis-Menten kinetics.

Original languageEnglish
Pages (from-to)2818-2821
Number of pages4
JournalChemCatChem
Volume5
Issue number10
DOIs
StatePublished - Oct 2013
Externally publishedYes

Keywords

  • Alkynes
  • Homogeneous catalysis
  • Hydride complexes
  • Rhodium
  • Selective hydrogenation

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