ABSTRACT

We have developed high performance polymer-bound metal complex catalysts for the chemoselective reduction of organic compounds with various hydrogen sources such as H₂O, H₂ and HCO₂H. In this article, the catalyst design of the polymeric supports for the chemoselective reduction of carbonyl compounds catalyzed by rhodium carbonyl clusters was described. The polymer-bound rhodium cluster complexes were reusable catalysts for the above reductions without loss of the activities, which were considered to be the environmentally-friendly catalysts. Further, the novel materials, dendrimers were used as multidentate ligands to prepare the polymeric metal complex catalysts and the specific features of the dendrimer-bound Pd complexes were discussed.