Abstract
A silica-supported poly-ω-(methylseleno)undecylsiloxane palladium(0) complex has been prepared from ω-chloroundecyltriethoxysilane via immobilization on fumed silica, followed by reacting with sodium methylselenolate in ethanol and palladium chloride in acetone and then the reduction with hydrazine hydrate in ethanol. The complex is a highly active and stereoselective catalyst for arylation of conjugated alkenes with aryl halides. This polymeric palladium catalyst can be recovered and reused.
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