Palladium complexes of 2-pyridin-2-yl substituted 1,3-bis(diphenylphosphino)propane: Highly active catalysts for the room-temperature copolymerization of carbon monoxide with ethene

Simon Doherty, Edward G. Robins, Mark Nieuwenhuyzen, Paul A. Champkin, William Clegg

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The 2,2′-disubstituted 1,3-bis(diphenylphosphino)propane derivatives [XC (Me)(CH2PPh2)2] (X = 2-py, 1a; X = CH2OMe, 1b; X = Ph, 1c) and their corresponding palladium complexes [(P-P)PdCl2] (2a-c), [(P-P)Pd(OAc)2] (3a-c), [{2-methyl-2-pyridin-2-yl-1,3-bis(diphenylphosphino)propane}PdClMe] (4a), and [{(S)-(+)-N,N-dimethyl-α-methylbenzylamine-C,N}-Pd{2-MeOCH2CMe( CH2PPh2)2}][ClO4] (5b) have been prepared and characterized. Palladium(II) complexes of 2-methyl-2-pyridin-2-yl-1,3-bis(diphenylphosphino)propane (la) are highly active for the room-temperature copolymerization of ethene and carbon monoxide and, under our conditions, markedly more active than systems based on 1,3-bis(diphenylphosphino)propane (dppp), 1b and 1c. Catalysts formed from dppp, 1b, and lc all show the expected increase in activity at elevated temperature (90 °C), while that formed from la is highly temperature-sensitive and rapidly decomposes.

Original languageEnglish
Pages (from-to)4147-4158
Number of pages12
Issue number20
Publication statusPublished or Issued - 30 Sept 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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