Impact of cyclodextrins on the behavior of amphiphilic ligands in aqueous organometallic catalysis.

ABSTRACT: In this study, we showed that the addition of randomly modified ?-cyclodextrin (RAME-?-CD) in aqueous medium could have a beneficial impact on the catalytic performances of phosphane-based aggregates in the Pd-catalyzed cleavage of allyl carbonates (Tsuji-Trost reaction). The RAME-?-CD/phosphane supramolecular interactions helped explain the catalytic results. The presence of RAME-?-CD in the aqueous compartment improved the phosphane-based aggregate dynamics. The exchanges between the hydrophobic substrate-containing aggregate core and the catalyst-containing aqueous phase were then greatly favored, resulting in an increase in the catalytic performances.

SUBMITTER: Bricout H 

PROVIDER: S-EPMC3458772 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature