title: A homogeneous, recyclable polymer support for Rh(I)-catalyzed C-C bond formation.
abstract: A robust and practical polymer-supported, homogeneous, recyclable biphephos rhodium(I) catalyst has been developed for C-C bond formation reactions. Control of polymer molecular weight allowed tuning of the polymer solubility such that the polymer-supported catalyst is soluble in nonpolar solvents and insoluble in polar solvents. Using the supported rhodium catalysts, addition of aryl and vinylboronic acids to the electrophiles such as enones, aldehydes, N-sulfonyl aldimines, and alkynes occurs smoothly to provide products in high yields. Additions of terminal alkynes to enones and industrially relevant hydroformylation reactions have also been successfully carried out. Studies show that the leaching of Rh from the polymer support is low and catalyst recycle can be achieved by simple precipitation and filtration.
authors: Department of Chemistry and Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66045, United States.
authors: Ranjan
authors: R
authors: Jana
authors: Jon A
authors: JA
authors: Tunge
mesh_terms: D000447:Aldehydes / Q000737:chemistry; D000480:Alkynes / Q000737:chemistry; D001897:Boronic Acids / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D002625:Chemistry, Organic / Q000379:methods*; D057927:Hydrophobic and Hydrophilic Interactions; D007659:Ketones / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D008970:Molecular Weight; D011108:Polymers / Q000138:chemical synthesis*; D059027:Recycling; D012238:Rhodium / Q000737:chemistry*; D012995:Solubility; D012997:Solvents
chemical_list: D000447:Aldehydes; D000480:Alkynes; D001897:Boronic Acids; D007659:Ketones; D011108:Polymers; D012997:Solvents; D002244:Carbon; D012238:Rhodium