Abstract
AbstractThe preparation of a heterogeneous Pd catalyst supported on carbon‐coated magnetic nanoparticles (NPs) bearing 4‐(diphenylphosphinomethyl)phenyl groups is discussed. These NPs were initially prepared by chemical vapour deposition (CVD) of carbon on preformed Co NPs; however, the particles prepared in one step by reducing flame synthesis were more appropriate for functionalization. The Pd catalyst was then prepared by three simple steps. We show that Suzuki–Miyaura couplings can be efficiently performed in the presence of very low amounts of supported Pd, usually 50 μequiv. Finally, the Pd leaching was very low: in most cases only 1 μequiv. of Pd is found in the reaction medium (which amounts to less than 1 ppm of the product). Compared to other catalysts supported on magnetic particles, this catalyst is very simple to prepare even in large quantities and is easy to recover completely owing to the high magnetic saturation of the Co nucleus. To the best of our knowledge, it is the simplest and the most‐active Pd catalyst supported on carbon‐coated Co nanoparticles for Suzuki–Miyaura reactions. The reusability of the catalyst was also ascertained.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.