期刊
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
卷 18, 期 8, 页码 1891-1903出版社
SPRINGER
DOI: 10.1007/s13738-021-02171-6
关键词
Stille reaction; Homo-coupling carbonylation; Suzuki carbonylation; Diaryl Ketones; Phosphine-free; Heterogeneous catalysis
资金
- Shiraz University Council
A practical and heterogeneously catalyzed Stille, homo-coupling, and Suzuki carbonylation reaction has been reported using Pd nanoparticles supported on amino-vinyl silica-functionalized magnetic carbon nanotube for the efficient synthesis of symmetrical and unsymmetrical diaryl ketones from aryl iodides. This method offers high activity with very low palladium leaching and allows for the reuse and recycling of the catalyst for six steps without loss in activity, demonstrating a sustainable methodology.
A practical and heterogeneously catalyzed Stille, homo-coupling, and Suzuki carbonylation reaction has been reported using Pd nanoparticles supported on amino-vinyl silica-functionalized magnetic carbon nanotube (CNT@Fe3O4@SiO2-Pd) for the efficient synthesis of symmetrical and unsymmetrical diaryl ketones from aryl iodides. A wide variety of symmetrical and unsymmetrical diaryl ketones were obtained in high yields under CO gas-free conditions using Mo(CO)(6) as an efficient carbonyl source. Considering the atom economy of Ph3SnCl, less than an equimolar amount can be applied in Stille transformation, which is of great importance due to the toxicity of organotin derivatives. Moreover, no phosphine ligand and external reducing agent were necessary in these coupling carbonylation reactions. This heterogeneous Pd catalyst offers high activity with very low palladium leaching. Finally, the catalyst can be reused and recycled for six steps without loss in activity, exhibiting good example of sustainable methodology. Graphic abstract
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