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Issue 5, 2009
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Aqueous-biphasic hydroformylation of alkenes promoted by “weak” surfactants

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Abstract

The aqueous-biphasic hydroformylation of higher alkenes catalyzed by Rh/TPPTS has been carried out in the presence of imidazolium, pyridinium and triethylammonium salts. High reaction rates are achieved with imidazolium and triethylammonium salts provided that their alkyl “tail” is ≥C8. Fast and complete phase separation, and good retention of the metal in the aqueous phase could be achieved with an octyl “tail”. Imidazolium salts were found to give the highest rate enhancement. The nature of the anion showed a moderate influence on the reaction. Evidence suggests that the additive can act as weak surfactant allowing emulsions to be formed and broken by simply switching the stirring on and off.

Graphical abstract: Aqueous-biphasic hydroformylation of alkenes promoted by “weak” surfactants

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Publication details

The article was received on 10 Dec 2008, accepted on 17 Feb 2009 and first published on 06 Mar 2009


Article type: Paper
DOI: 10.1039/B822139A
Citation: Green Chem., 2009,11, 630-637
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    Aqueous-biphasic hydroformylation of alkenes promoted by “weak” surfactants

    S. L. Desset, S. W. Reader and D. J. Cole-Hamilton, Green Chem., 2009, 11, 630
    DOI: 10.1039/B822139A

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