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Vinylation of Aryl and Alkenyl Halide

Vinylpolysiloxane 1 rapidly undergoes cross-coupling reactions with aryl bromides in the presence of tetrabutylammonium fluoride and Pd catalysts under mild conditions to give coupling vinylation products in high yield.1)
Stem-type dendrimers are synthesized by the reaction of 1 as the core with an excess of trichlorosilane in the presence of a Pt/C catalyst.2)

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