Magnetically-recoverable Pd-immobilized layered double hydroxide–iron oxide nanocomposite catalyst for carbon–carbon cross-coupling reactions

A novel magnetic composite catalyst has been prepared by immobilizing a palladium(0) complex, Pd2(dba)3, onto Mg–Al-layered double hydroxide shell supported on magnetite core. This new catalyst was characterized by XRD, TEM, EDX, FTIR, XPS, thermogravimetry and microanalytical techniques and magnetometric measurements. The performance of the catalyst was tested in the Heck and Suzuki reactions and confirmed to be efficient in the cross-coupling of aryl iodides under mild conditions.

A novel catalytic system active in the Heck-Mizoroki and Suzuki-Miyaura reactions is reported. The system is prepared by incorporating Pd2(dba)3 to a Mg-Al-LDH shell supported on magnetite core. The magnetically recoverable catalyst exhibited moderate activity with aryl iodides in carbon-carbon cross-coupling reactions.Figure optionsDownload as PowerPoint slideHighlights
► Pd2(dpa)3 was immobilized on Mg–Al–LDH shell supported on magnetite core.
► The magnetically recoverable nanocomposite catalyst displayed soft ferromagnetism.
► Pd-LDH@M moderately catalyzed cross-coupling reactions of aryl iodides.