Dendritic structured palladium complexes: magnetically retrievable,highly efficient heterogeneous nanocatalyst for Suzuki and Heck cross-coupling reactions |
| |
| Authors: | Safoora Sheikh Mohammad Ali Nasseri Mohammad Chahkandi Oliver Reiser Ali Allahresani |
| |
| Affiliation: | Department of Chemistry, Faculty of Basic Sciences, University of Birjand, P. O. Box 97175-615, Birjand Iran.; Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg German ; Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, P. O. Box 96179-76487, Sabzevar Iran, |
| |
| Abstract: | The recyclable nanomagnetic Pd-complex PAMAM G0-Pd@γ-Fe2O3 is reported for catalytic C–C cross-coupling reactions of challenging substrates. Mainly, a great variety of aryl chlorides can be used as substrates for Suzuki–Miyaura and Mizoroki–Heck reactions under mild reaction conditions (60–90 °C) and low catalyst loading (<1 mol% Pd) in aqueous media. The presence of numerous polar groups in the polymer matrix increases the solubility of the catalyst in water, thus facilitating its operation in aqueous environments. The immobilization of the catalyst on the surface of a magnetic platform allows its effective recovery and reuse without significant loss of catalytic activity for at least six cycles with total leaching of <1% palladium metal, meeting the requirements for acceptable metal residues in the pharmaceutical industry.The recyclable nanomagnetic Pd-complex PAMAM G0-Pd@γ-Fe2O3 is reported for catalytic C–C cross-coupling reactions of challenging substrates. |
| |
| Keywords: | |
|
|
