Fe3O4 Nanoparticles-Supported Palladium-Bipyridine Complex: Effective Catalyst for Suzuki Coupling Reaction

Abstract

Fe 3 O 4 nanoparticles-supported palladium-2, 2 0 -bipyridine complex was synthesized and used as catalyst for Suzuki coupling reactions between different aryl iodides and bromides with phenyl boronic acid under mild conditions. This catalyst can be separated magnetically. However, due to the aggregation of catalyst with the increase in reaction times, the activity dropped dramatically from[99% for the first time use to 45% for the fourth time use and then kept constant subsequently.

Development of citrate-stabilized Fe3O4 nanoparticles: Conjugation and release of doxorubicin for therapeutic applications

“…The maximum magnetization of CA-MNP was found to be 57 emu/g at 20 kOe. The observed magnetization is comparable to that of neat Fe 3 O 4 nanoparticles (60.5 emu/g) obtained by the co-precipitation method [32] and higher than the aqueous stable Fe 3 O 4 nanoparticles (43.2 emu/g) obtained by the high-temperature thermal decomposition method followed by subsequent surface functionalization through ligand-exchange strategy [3]. Thus, these aqueous stable Fe 3 O 4 nanoparticles having high magnetic response could be exploited for magnetic drug targeting, hyperthermia treatment and magnetic resonance imaging.…”

PEG conjugated citrate-capped magnetite nanoparticles for biomedical applications

“…This was due to the existence of the large amount of diamagnetic PEG in the PEGylated MNPs. The observed magnetization is comparable to that of MNPs acquired by the coprecipitation method [4,31] and higher than the aqueous stable MNPs (43.2 emu/g) [32]. For biomedical applications such as hyperthermia, it is required that the MNPs have high saturation magnetization, uniform particle size and superparamagnetism.…”

Reductive Ullmann Coupling of Aryl Halides by Palladium Nanoparticles Supported on Cellulose, a Recoverable Heterogeneous Catalyst

“…This has led to perform the Ullmann coupling variant, catalyzed by nickel or palladium [13]. Palladium-catalyzed carbon-carbon bond forming reactions are among the most selective and effective reactions in organic synthesis [14,15]. Homogeneous Ullmann homocoupling of aryl halides catalyzed by palladium complexes have been reported by Rawal et al [16].…”