Asymmetric hydroformylation of olefins in highly crosslinked polymer matrixes

When polymer-immobilized chiral phosphine-phosphite-Rh(I) complexes were us ed, the asymmetric hydroformylation of styrene gave 2- and 3-phenylpropanal s with a substrate/catalyst ratio of 2000, iso/normal ratios of 84/16 to 89 /11, and 89% R enantiomeric excess of 2-phenylpropanal; these results were at the highest level in catalytic activity, regio-, and enantioselectivitie s. Recovery-reuse of the catalyst was examined. Asymmetric hydroformylation of vinyl acetate, (Z)-2-butene, and 3,3,3-trifluoropropene was also succes sfully performed with the polymer-supported catalysts.