10.1021/ol026098z
The research focuses on the development of a new hybrid inorganic-organic polymer as a support for heterogeneous catalysis, specifically for the Heck arylation reaction. The purpose of the study was to create an efficient and robust heterogeneous catalyst that could be recycled without significant loss of activity. The researchers synthesized a Pd(0) complex of a pendant cyclophosphazene-containing cross-linked polymer, which they found to be an effective catalyst for the Heck reaction. The key chemicals used in the process included polyphosphazenes, specifically polydichlorophosphazene, which served as the backbone for the polymeric ligand, and 4-hydroxy-4′-vinylbiphenyl, which provided the polymerizable vinyl group. Other chemicals involved in the synthesis included OH-C6H4-p-PPh2 to introduce phosphino groups, and various aryl halides and olefins used in the Heck reaction tests. The conclusions of the research were that the synthesized Pd(0)-metalated polymeric catalyst was not only effective in catalyzing the Heck reaction but also showed high recyclability with no significant palladium leaching, demonstrating the potential of this approach to enhance existing methodologies for polymer supports in catalysis.
