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Lookup NU author(s): Dr Simon DohertyORCiD, Dr Edward Robins, Paul Anthony Champkin, Professor 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.
Author(s): Doherty S, Robins EG, Nieuwenhuyzen M, Champkin PA, Clegg W
Publication type: Article
Publication status: Published
Journal: Organometallics
Year: 2002
Volume: 21
Issue: 20
Pages: 4147-4158
ISSN (print): 0276-7333
ISSN (electronic):
Publisher: American Chemical Society
URL: http://dx.doi.org/10.1021/om020301c
DOI: 10.1021/om020301c
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