Bis(diazaphospholidine) ligands for asymmetric hydroformylation: use of ESPHOS and derivatives based on ferrocene and diarylether backbones

Guy J Clarkson, Jeffrey R Ansell, David John Cole-Hamilton, Peter J Pogorzelec, John Whittell, Martin Wills

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A series of investigations have been completed on the use of the bis(diazaphospholidine) ligand ESPHOS in asymmetric hydroformylation. This study serves to confirm the optimum conditions for the use of this ligand. Two further ligands, based on ferrocene and biphenylether backbones, are also reported, but both give inferior results in hydroformylation in comparison with ESPHOS itself. The results from the hydroformylation reactions, and other studies, suggest that the ferrocene and biarylether systems are acting as monodonor ligands, rather than bidentate. (C) 2004 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1787-1792
Number of pages6
JournalTetrahedron: Asymmetry
Volume15
Issue number11
DOIs
Publication statusPublished - 7 Jun 2004

Keywords

  • HIGHLY ENANTIOSELECTIVE HYDROFORMYLATION
  • PHOSPHORUS-DONOR LIGANDS
  • PHOSPHINE-PHOSPHITE-RH(I) COMPLEXES
  • DIAZAPHOSPHOLIDINE LIGANDS
  • RHODIUM(I) COMPLEXES
  • PHOSPHINE LIGANDS
  • OLEFINS
  • CATALYSIS

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