Palladium-catalyzed arylation of cyclopentadienes
Cyclopentadiene and metallocenes, typically zirconocene dichloride, are suitable substrates for multiple arylations with aryl bromides in palladium-catalyzed reactions. Thus, various aryl bromides bearing either an electron-donating or an electron-withdrawing substituent can react with these substrates to afford the corresponding 1,2,3,4,5-pentaaryl-1,3-cyclopentadienes in a single preparative step. Derivatives of cyclopentadiene, including di- and trisubstituted cyclopentadienes, and indene are arylated in a similar fashion.
Dyker
G
Organic/Organometallic Chemistry, Gerhard-Mercator-Universitat Duisburg, Germany. dyker@uni-duisburg.de
Heiermann
J
Miura
M
Inoh
JI
Pivsa-Art
S
Satoh
T
Nomura
M