An easy access to styrenes: trans aryl 1,3-, 1,4-and 1,5-dienes, and 1,3,5-trienes by Hiyama cross-coupling catalyzed by palladium nanoparticles

作者：Chatterjee Tanmay; Dey Raju; Ranu Brindaban C^*

来源：New Journal of Chemistry, 2011, 35(5): 1103-1110.

DOI：10.1039/c0nj01019g

A convenient and efficient procedure has been developed for the vinylation of aryl-, styrenyl-, cinnamyl-and dienyl-halides by a Pd(0) nanoparticle-catalyzed Hiyama cross-coupling to provide the corresponding dienes and trienes in high yields. The reaction does not require any ligand or co-catalyst, and is carried out using PdCl2 and tetrabutyl ammonium fluoride (TBAF) in THF. Pd nanoparticles are generated in situ and are the active catalytic species in this reaction. A wide range of functionalized styrenes, trans aryl 1,3-, 1,4-and 1,5-dienes, 1,2-, 1-3 and 1,4-bis(1,3-dienes), and 1,3,5-trienes can be obtained by this procedure.

• 出版日期2011