Highly Stereoselective Palladium(0)-Catalyzed Allylation of Active Methylene Compounds with Allyl Imidates under Neutral Conditions
作者:Osamu Suzuki、Seiichi Inoue、Kikumasa Sato
DOI:10.1246/bcsj.62.239
日期:1989.1
In the presence of a catalytic amount of Pd(0), active methylene compounds were allylated by allyl imidates under neutral conditions. In allylation with 3,3-disubstituted allyl imidates, e.g., geranyl and neryl imidate the effect of solvent and ligand to the E/Z ratio are investigated. The reaction in dimethyl sulfoxide by addition of diphosphine, e.g., 1,2-bis(diphenylphosphino)ethane, or large excess
The palladium complexes such as Pd(PPh3)4 and Pd(PhCN)2Cl2 catalyzed the rearrangement of allylic N-phenylformimidates to give N-allyl-N-phenylformamides under a mild condition. The reaction courses are strongly influenced by the oxidation state of palladium complexes used.