Fluorous-phase soluble polymeric supports

Fluorous phase soluble polymer supports derived from fluoroacrylate polymer s are described. N-Acryloxysuccinimide-containing fluoroacrylate polymers w ere readily prepared from commercially available monomers. The activated ac rylates so prepared were then converted into chelating and nonchelating lig ands by amidation of the N-acryloxysuccinimide active eater residues. Phosp hine ligands attached to these supports were used to prepare neutral and ca tionic rhodium(f) hydrogenation catalysts as well as palladium(0) catalysts . Similar substitution of pendant active ester groups to form hydroxamic ac id ligands for metal sequestration is also feasible. Liquid/liquid extracti on readily separated, recycled and reused these polymer-bound ligands and c atalysts. While fluorous phase solubility could be attained with polymers c ontaining only heptafluorobutyryl groups, selective solubility in a fluorou s phase in contact with an organic phase was only seen with fluoroacrylates that contained larger fluorinated ester groups.