Chinese Journal of Organic Chemistry >
Synthesis of Poly(p-aminophenol) Microsphere-Supported Palladium Complex and Evaluation of Its Catalytic Performance for Heck Reaction
Received date: 2013-02-28
Revised date: 2013-04-08
Online published: 2013-04-17
Poly(p-aminophenol) microspheres were prepared by template polymerization of p-aminophenol in the presence of horseradish peroxidase as bio-enzyme catalyst. The average size of poly(p-aminophenol) microsphere is about 2 μm. Further, poly(p-aminophenol) microspheres as obtained were loaded with palladium to generate poly(p-aminophenol) microsphere-supported Pd complex. Resultant Pd complex catalyst supported by poly(p-aminophenol) microsphere was characterized by means of IR, XRD, XPS, SEM, TG etc. XPS confirms the presence of zerovalent palladium. Poly(p-aminophenol) microsphere maintains their configuration after coordination with palladium chloride, while a large number of fine Pd particulates are uniformly adsorbed on poly(p-aminophenol) microspheres. The complex is an efficient catalyst for Heck arylation of acrylic acid, styrene with aryl iodide under solvent-free condition and it also exhibits catalytic activity for activated bromobenzene. Yield of cinnamic acid was 92% for Heck reaction of acrylic acid with iodobenzene even though the complex was used 5 times.
Key words: enzymatic; poly(p-aminophenol) microsphere; supported; palladium; Heck reaction
Nie Guangrui , Zhang Lei , Cui Yuanchen . Synthesis of Poly(p-aminophenol) Microsphere-Supported Palladium Complex and Evaluation of Its Catalytic Performance for Heck Reaction[J]. Chinese Journal of Organic Chemistry, 2013 , 33(08) : 1734 -1740 . DOI: 10.6023/cjoc201302023
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