Synthesis of novel and room temperature-operable palladium complexes on graphene oxide: An efficient recyclable catalyst for Suzuki-Miyaura coupling reactions
Two new palladium complexes with pyrazole derived ligands 2a–2b have been easily prepared and well characterized by elemental analysis, 1H NMR, 13C NMR, and IR spectra. Their detailed structures are determined by a single-crystal X-ray analysis of 2a. The two compounds were successfully applied to the Suzuki coupling reactions of aryl bromides with phenylboronic acid, in aqueous solution at room temperature under air, giving the desired coupled products in good to excellent yields with catalyst loadings as low as 0.01–0.05 mol-%.
Three palladium complexes were synthesized via an external cross-linking reaction and found to be effective heterogeneous catalysts for the Suzuki–Miyaura reaction.
Three-dimensional graphene oxide foam (3DGO) was found to be a highly efficient and recyclable catalyst for the oxidation of thioanisole at room temperature.
Corrigendum to “Hydrogen liberation from the dehydrocoupling of dimethylamine–borane at room temperature by using novel and highly monodispersed RuPtNi nanocatalysts decorated with graphene oxide” [International Journal of Hydrogen Energy 42 (2017) 23299–23306]