title: Nano Pd(0) supported on cellulose: a highly efficient and recyclable heterogeneous catalyst for the Suzuki coupling and aerobic oxidation of benzyl alcohols under liquid phase catalysis.
abstract: Nano palladium(0) supported on cellulose was found to be highly efficient recyclable heterogeneous catalyst for the Suzuki coupling between aryl bromides and phenyl boronic acid in water and aerobic oxidation of benzyl alcohols using air as the source of molecular oxygen in acetonitrile. The Cell-Pd(0) was prepared by stirring commercially available cellulose with Pd(OAc)(2) in ethanol at 25°C followed by reduction with hydrazine hydrate, leading finally to nano Pd(0) particles uniformly distributed on surface of cellulose. This catalytic system provides biaryls and polyaryls in excellent yields with very high turn over numbers via Suzuki coupling; and benzaldehyde derivatives in high yields and selectivity by oxidation in air. Cell-Pd(0) was characterized by X-ray diffraction techniques (XRD), thermal analysis (TGA), scanning electron microscope (SEM) and transmission electron microscope (TEM).
authors.affiliation: Department of Chemistry, University of Jammu, Jammu 180 006, India.
authors.forename: Navjot
authors.initials: N
authors.lastname: Jamwal
authors.forename: Ravinderpal Kour
authors.initials: RK
authors.lastname: Sodhi
authors.forename: Princy
authors.initials: P
authors.lastname: Gupta
authors.forename: Satya
authors.initials: S
authors.lastname: Paul
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D001592:Benzyl Alcohols / Q000737:chemistry*; D001897:Boronic Acids / Q000737:chemistry; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry; D002625:Chemistry, Organic / Q000379:methods*; D017743:Equipment Reuse; D000431:Ethanol / Q000737:chemistry; D006834:Hydrazines / Q000737:chemistry; D008024:Ligands; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D014867:Water; D014961:X-Ray Diffraction
chemical_list: D000097:Acetonitriles; D001592:Benzyl Alcohols; D001897:Boronic Acids; D006834:Hydrazines; D008024:Ligands; D014867:Water; C029424:hydrazine; D000431:Ethanol; D010165:Palladium; D002482:Cellulose; C010686:benzeneboronic acid; D010100:Oxygen; C032159:acetonitrile