Asymmetric 1,4-addition of triarylbismuths to enones catalyzed by dicationic palladium(II) complexes.
A 1,4-addition of triarylbismuths to cyclic and acyclic enones was carried out in aqueous methanol in the presence of a chiral phosphine-dicationic palladium(ii) complex. Palladium complexes of (S,S)-chiraphos or (S,S)-dipamp gave optically active beta-arylketones of up to 95% ee.
Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan.
Takashi
T
Nishikata
Yasunori
Y
Yamamoto
Norio
N
Miyaura