The hydrogenation of olefins using a polymer supported ruthenium complex |
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Authors: | Christakis P. Nicolaides Neil J. Coville |
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Affiliation: | Chemistry Department, University of the Witwatersrand, Johannesburg, 2001 South Africa |
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Abstract: | RuCl2(PPH3)3 has been attached to a phosphinated polymer support (phosphinated polystyrene crosslinked with 2% divinylbenzene) and the reagent converted to the polymer supported analogue of RuClH(PPH3)3 in the presence of base. The polymer supported catalyst efficiently hydrogenates terminal olefins under ambient conditions. Hydrogenation of 1-hexene has revealed that the reaction rate is proportional to [Ru], [H2] and [olefin]/(1 + [olefin]). The polymer support environment allows for selectivity in olefin hydrogenation and under suitable reaction conditions short chain terminal olefins are hydrogenated more rapidly than long chain terminal olefins. The extent of metal loading on the polymer and the reaction solvent composition also influence the reaction selectivity and these effects are discussed. |
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