A novel 1,2,4-triazine-functionalized polystyrene resin-supported Pd(II) complex: A copper- and solvent-free highly efficient catalyst for Sonogashira coupling reactions

A Highly Active Nickel-Fibre Complex as a Catalyst for the Heck Reaction

A new amidoxime fibre-nickel catalyst (AOFs-Ni(O)) was synthesised by a coordination and reduction reaction. The X-ray diffraction patterns indicated that the Ni(ll) ions were reduced to Ni(0). The scanning electron microscope image showed that the Ni(0) particles which were reduced in situ had a diameter of about 300 nm. This catalyst demonstrated high activity in the Heck coupling reaction of aryl iodine and conjugated alkenes without the protection of an inert atmosphere.

Dendrimer-encapsulated Pd(0) nanoparticles immobilized on nanosilica as a highly active and recyclable catalyst for the copper- and phosphine-free Sonogashira–Hagihara coupling reactions in water

Recyclable dendrimer-encapsulated Pd(0) nanoparticles immobilized on nanosilica in the Sonogashira–Hagihara reaction under copper(i) and phosphine ligand-free conditions in water.

Efficient Catalytic Sonogashira Reaction Catalysed by Modified Fibre-Palladium(II) Complex in Air

A hydroxylamine modified polypropylene fibre [Pd(II)-AOFs] was synthesised and used to catalyse the Sonogashira reaction between phenylacetylene and iodobenzene. The results showed that highly efficient catalytic activity can be achieved for the cross-coupling reaction. More importantly, the reaction conditions are moderate and do not require inert gas protection. The catalyst could be readily extracted by simple operations and conveniently recycled four times without an obviously significant decrease in activity.