Maghemite decorated with ultra-small palladium nanoparticles (γ-Fe₂O₃–Pd): applications in the Heck–Mizoroki olefination, Suzuki reaction and allylic oxidation of alkenes

Abstract

γ-Fe2O3–Pd NPs for Heck, Suzuki and allylic oxidation reaction under milder conditions.

Incorporating Pd(OAc)2 on Imine Functionalized Microporous Covalent Organic Frameworks: A Stable and Efficient Heterogeneous Catalyst for Suzuki‐Miyaura Coupling in Aqueous Medium

“…A comparison of the PXRD patterns of TATAE and Pd/TATAE revealed that the structure of TATAE was well preserved after the treatment with Pd(OAc) 2 . In addition, the d ‐spacing and diffractions patterns of TATAE and Pd/TATAE showed a similar patterns, but the Pd/TATAE new peak was observed in these 2θ values 12.40°, 12.56°, 40.33° indicating that Pd(OAc) 2 coordinated with (C=N) imine bond and π‐π stacking of the conjugated aromatic ring, which is consistent with reported literature . Shuliang Xu et al .…”

Palladium Nanoparticles Hosted on Hydrazine‐Grafted Magnetite and Silica Particles to Catalyze the Reduction of Oxymetal Ions with Formic Acid

“…The silanol groups on silica can be used for the covalent attachment of functional groups . Pd NPs and functional groups that bear magnetic particles, such as γ‐Fe 2 O 3 (maghemite) and Fe 3 O 4 (magnetite), are magnetically recoverable and have been envisaged for sustainable technology –. An alkoxysilane coating on Fe 3 O 4 can impart chemical stability and provides precursor sites to anchor desirable nanocatalysts.…”

Synthesis of Azabicyclic Building Blocks for Daphniphyllum Alkaloid Intermediates Featuring N‐Trichloroacetyl Enamide 5‐endo‐trig Radical Cyclizations

“…Pd‐Promoted α ‐alkenylation of ketone 22 gave tetracyclic compound 23 , involving a ring closure step as well as an in situ allylic oxidation. The presence of adventitious molecular oxygen in the medium enabled Pd nanoparticles to catalyze the reaction …”