Platinum complexes of heteroannularly bridged heterobidentate ferrocenyl diphosphine ligands: Their molecular structure and their use in catalytic carbonylation reactions

Thomas Sturm, Walter Weissensteiner, Kurt Mereiter, Tamás Kégl, György Jeges, György Petolz, László Kollár

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Platinum complexes PtCl2(L) and PtCl(SnCl3)(L) of the ferrocenyl diphosphine ligands (L) (R,R)-1-diphenylphosphino-2,1′-[(1-diphenylphosphino)-1,3-propanediyl]- ferrocene (1), (R,R)-1-diphenylphosphino-2,1′-[(1-dicyclohexylphosphino)-1,3-propanediyl] -ferrocene (2), (R,R)-1-bis(4-fluorophenyl)phosphino-2,1′-[(1-diphenylphosphino)-1,3- propanediyl]-ferrocene (3), have been synthesised. Complexes PtCl2(1) and PtCl2(2) have been structurally characterised by X-ray diffraction. Both the 'preformed' and the in situ catalysts have been used in hydroformylations of styrene. At low temperature (below 70°C) and with use of the platinum catalysts the prevailing formation of (R)-2-phenyl-propanal was observed, while at higher temperatures the formation of the (S)-enantiomer was favoured. The palladium catalysts proved to be rather inactive in the hydromethoxycarbonylation of styrene. In the presence of ligand 2 the predominant formation of the linear regioisomer was observed.

Original languageEnglish
Pages (from-to)93-101
Number of pages9
JournalJournal of Organometallic Chemistry
Volume595
Issue number1
DOIs
Publication statusPublished - Jan 31 2000

Keywords

  • Carbonylation
  • Ferrocene
  • Hydroformylation
  • Nuclear magnetic resonance
  • Palladium
  • Phosphine
  • Platinum

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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