Synthesis of Silica-supported Poly-4-thia-6-diphenylphosphinohexylsiloxane Palladium(0) Complex and Its Catalytic Properties

Abstract

Abstract: Asilica-supported poly-4-thia-6-diphenylphosphinohexylsiloxane palladium(0) complex was synthesized by treatment of poly-4-thia-6-diphenylphosphinohexylsiloxane and palladium chloride in acetone, followed by the reduction with hydrazine hydrate in ethanol.It was found that the title complex was an efficient catalyst for the cross coupling reactions of aryl or vinyl halides with olefins, acetylenes and Grignard reagents.This polymeric palladium(0) catalyst is stable and can be reused without noticeable loss of activity.Hence this paper presents a simple and practical method for the synthesis of stilbenes, butyl cinnamates, arylacetylenes and biaryls.

Key words: Polymeric palladium catalyst, Sulfur phosphine mixed bidentate palladium(0) complex, Cross coupling reaction, Catalytic property

CLC Number:

O631

TrendMD:

HU Rong-Hua, LI Hai-Gen, CAI Ming-Zhong. Synthesis of Silica-supported Poly-4-thia-6-diphenylphosphinohexylsiloxane Palladium(0) Complex and Its Catalytic Properties[J]. Chem. J. Chinese Universities, 2003, 24(11): 2073.

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Synthesis of Silica-supported Poly-4-thia-6-diphenylphosphinohexylsiloxane Palladium(0) Complex and Its Catalytic Properties

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