Immobilized Pd on (S)‐methyl histidinate‐modified multi‐walled carbon nanotubes: a powerful and recyclable catalyst for Mizoroki–Heck and Suzuki–Miyaura C–C cross‐coupling reactions in green solvents and under mild conditions

Abstract

A stable and powerful heterogeneous palladium catalyst was synthesized using immobilized palladium on (S)-methyl histidinate bonded onto the surface of multi-walled carbon nanotubes. The catalyst was characterized using a combination of Fourier transform infrared and X-ray photoelectron spectroscopies, transmission electron microscopy, X-ray powder diffraction and inductively coupled plasma, thermogravimetric and elemental analyses. This new air-and moisture-stable phosphine-free palladium catalyst was found to be highly active and reusable in Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions in poly(ethylene glycol) and aqueous ethanol as green solvents using an extremely small amount of palladium under mild conditions. Copyright

Pd nanoparticles immobilized on magnetic chitosan as a novel reusable catalyst for green Heck and Suzuki cross‐coupling reaction: In water at room temperature

“…In continuous of our interest in developing of preparation various heterogonous catalyst and studying their applications in cross coupling reaction, now the work on the synthesis and characterization of chitosan‐supported palladium complexes and its catalytic behavior in Heck and Suzuki cross coupling reactions was presented.…”

Carbon‐Derived Supports for Palladium Nanoparticles as Catalysts for Carbon‐Carbon Bonds Formation

“…Hajipour and co‐workers were reported the synthesis Pd NPs immobilized on a f‐MWCNTs bearing ( S )‐methyl histidinate (Scheme ) . The synthesized catalyst offered high activity and reusability in the Heck and Suzuki reactions in polyethylene glycol (PEG) 200 and aqueous ethanol as solvents, respectively.…”

“…Hajipour and co-workers were reported the synthesis Pd NPs immobilized on a f-MWCNTs bearing (S)-methyl histidinate (Scheme 15). [85] The synthesized catalyst offered high activity and reusability in the Heck and Suzuki reactions in polyethylene glycol (PEG) 200 and aqueous ethanol as solvents, respectively. Heck coupling of aryl iodides and bromides were performed with styrene using KOH as base, 0.0022 mol % Pd at 50°C and gave corresponding olefins in high to excellent yields.…”

Cobalt‐Catalyzed Three‐Component Synthesis of Propargylamine Derivatives and Sonogashira Reaction: A Comparative Study between Co‐NPs and Co‐NHC@MWCNTs

“…With increasingly important consideration to development of environmentally friendly synthetic methods, N heterocyclic carbene (NHC) cobalt complexes have been developed by immobilizing on solid supports. In continuation of our recent investigations on the application of heterogeneous catalytic systems in cross‐coupling reactions; herein, NHC–Co(ΙΙ) complex supported on MWCNTs (Co–NHC@MWCNT) was prepared and its catalytic activity was investigated in three components coupling of aldehydes, alkynes, and amines and Sonogashira cross coupling reaction.…”