Preparation of ferrocenes with high fluorous-phase affinities

Hollis, W. Gary; Poferl, Matthew G.; Wolter, Michael D.; Deck, Paul A.; Slebodnick, Carla

doi:10.1016/j.jfluchem.2007.09.007

Cited by 5 publications

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[4a] The catalyst solubility in carbon dioxide can be improved by attaching perfluoroalkyl substituents on the phosphorus ligands of the catalyst. [6] Because the cost of perfluoroalkyl reagent starting materials increases with chain length, [7] the development of inexpensive "non-fluorous" CO 2 -philic ligands is receiving increasing attention. [8] Other ways to increase the solubility of higher molecular weight substances in carbon dioxide rich media are based on the use of cosolvents [9] or auxiliary agents like peracetylated b-cyclodextrins.…”

Section: Introductionmentioning

confidence: 99%

Efficient Hydroformylation in Dense Carbon Dioxide using Phosphorus Ligands without Perfluoroalkyl Substituents

et al. 2009

View full text Add to dashboard Cite

Rhodium catalysts modified with triphenylphosphine, triphenyl phosphite, and tris(2,4-ditert-butylphenyl) phosphite have been evaluated for their performance in the hydroformylation of 1-octene using carbon dioxide as the solvent. It is demonstrated that these catalysts are very efficient for the hydroformylation in carbon dioxide, although they are not designed for use in this medium. In particular, the catalyst prepared in situ from dicarbonyl(2,4-pentanedione)rhodium(I) and tris(2,4-di-tert-butyl-phenyl) phosphite gave rise to an initial turnover frequency in excess of 3 10 4 mol aldehyde mol Rh h À1. Such a reaction rate is unprecedented for hydroformylation in supercritical carbon dioxide-rich reaction mixtures.

show abstract