Silica-Supported Poly-γ-Mercaptopropylsiloxane Palladium(0) Complex: A Highly Active and Stereoselective Catalyst for Arylation of Styrene and Acrylic Acid

Abstract
A silica-supported poly-γ-mercaptopropylsiloxane palladium(0) complex was prepared from poly-γ-mercaptopropylsiloxane and palladium chloride in acetone, followed by reduction with hydrazine in ethanol. The complex is a highly active and stereoselective catalyst for arylation of styrene and acrylic acid affording a variety of trans-stilbenes and substituted trans-cinnamic acids in high yields.