Palladium complexes bearing pyridylthioether ligands. Synthesis and application as efficient phosphine-free catalysts in Suzuki-Miyaura couplings
| Autor: | Reyna Reyes-Martínez, David Morales-Morales, Guadalupe G. Flores-Rojas, Alcives Avila-Sorrosa, Juan Manuel Germán-Acacio, Lucero González-Sebastián, Simón Hernández-Ortega, Felipe López-Saucedo |
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| Rok vydání: | 2018 |
| Předmět: |
010405 organic chemistry
Ligand Aryl chemistry.chemical_element 010402 general chemistry 01 natural sciences Combinatorial chemistry 0104 chemical sciences Catalysis Inorganic Chemistry chemistry.chemical_compound chemistry Microwave irradiation Materials Chemistry Physical and Theoretical Chemistry Efficient catalyst Single crystal Phosphine Palladium |
| Zdroj: | Inorganica Chimica Acta. 473:83-93 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/j.ica.2017.12.029 |
| Popis: | Pyridylthiother-ligated Pd(II) complexes have been synthesized and efficiently applied in Suzuki-Miyaura couplings using microwave irradiation in DMF and water. The pyridylthioether NS (NS1 and NS2) and pyridyldithiother (SNS) ligands and their corresponding palladium complexes Pd-NS1, Pd-NS2, Pd-SNS were easily synthesized and fully characterized by various analytical techniques. The molecular structures of the ligand SNS and the Pd(II) complexes Pd-NS2, Pd-SNS were unequivocally determined by single crystal X-ray diffraction analysis. From these compounds, complex Pd-SNS exhibits the ligand SNS coordinated in a N,N-bidentated rather than the typical SNS-pincer manner in the solid state, giving place to a seven membered palladacycle whereas in solution it behaves as a typical SNS-pincer complex. This compound was also found to be the most efficient catalyst of the series of complexes in Suzuki-Miyaura couplings with different p-substituted aryl bromides. |
| Databáze: | OpenAIRE |
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