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The hydroformylation of linear terminal alkenes using rhodium based catalysts under fluorous biphasic conditions in the presence and absence of toluene is reported. Using fluorinated ponytails to modify triarylphosphites and triarylphosphines, good selectivities and reactivities can be obtained, along with good retention of the catalyst and ligand within the fluorous phase. Using P(O-4-C 6 ...
Dendrimer-based phosphines with 8, 24 and 72 PR 2 arms (R=Me, Et, hexyl, Cy or Ph) based on polyhedral oligomeric silsesquioxane (POSS) cores have been synthesized and shown to catalyse hydroformylation reactions, in some cases with higher linear:branched product ratio (1:b) than their monomeric analogues.
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