A green direct preparation of a magnetic ordered mesoporous carbon catalyst containing Fe–Pd alloys: application to Suzuki–Miyaura reactions in propane-1,2-diol

Abstract

We report here a direct one-pot preparation of a magnetic mesoporous carbon containing Fe–Pd alloys from biosourced tannin as a carbon precursor, the Pluronic F127 surfactant as a pore structuring agent, PdCl₂ and Fe(NO₃)₃. The starting materials are cheap and easily accessible making the synthesis environmentally benign. This catalyst was successfully used for Suzuki–Miyaura reactions in the presence of extremely low amounts of supported Pd (150 μequiv.) in a non-toxic solvent (propane-1,2-diol). The catalyst can be recovered quantitatively by simple application of an external magnetic field and biaryls containing <1.5 μequiv. of Pd (i.e. <1 ppm) are obtained without any additional purification steps.