Palladium particles from oxime-derived palladacycle supported on Fe3O4/oleic acid as a catalyst for the copper-free Sonogashira cross-coupling reaction
作者： Kazem Karami , Samaneh Dehghani Najvani , Nasrin Haghighat Naeini , Pablo Hervés
DOI: 10.1016/S1872-2067(15)60837-3
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摘要: Abstract An oxime-derived palladacycle was synthesized using 4-bromobenzoxime and pyridine in CHCl 3 , characterized by FT-IR 1 H NMR spectroscopy. This Pd complex supported on Fe O 4 /oleic acid shown to be an efficient catalyst for the copper-free Sonogashira cross-coupling reaction of various aryl halides with phenylacetylene air ethanol or mixed aqueous medium. The gave highly active palladium nanoparticles organic synthesis. coupling products were obtained high yields low loading heterogeneous can separated external magnet reused six times without loss its activity. characterization carried out XRD, SEM TEM. Both TEM XRD revealed that well dispersed diameters from 5 10 nm average size 9.97 nm.
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