enantioselective allylicamination of acyclic allylic carbonates catalyzed by a palladium/(S)-BINAP(S) system was investigated. Amination of several substrates proceeded with high ee. Crotyl carbonates show an unusually high regioselectivity for the branched isomer. The use of (S)-TolBINAP(S) and (S)-3,5-xylyl-BINAP(S) as ligands was found to increase the enantioselectivity of the aminations. A P,S binding
A Highly Enantioselective Allylic Amination Reaction Using a Commercially Available Chiral Rhodium Catalyst: Resolution of Racemic Allylic Carbonates
作者:Derek C. Vrieze、Garrett S. Hoge、Perrine Z. Hoerter、Jared T. Van Haitsma、Brian M. Samas
DOI:10.1021/ol901031b
日期:2009.7.16
A novel method for the kinetic resolution of unsymmetrical acyclic allylic carbonates and the concurrent synthesis of enantioenriched secondaryamines using a commercially available chiral catalyst is disclosed.
Asymmetric allylic amination catalyzed by chiral ferrocenylphosphine-palladium complexes
作者:Tamio Hayashi、Kohei Kishi、Akihiro Yamamoto、Yoshihiko Ito
DOI:10.1016/s0040-4039(00)88870-x
日期:1990.1
A palladiumcomplex bearing chiral (hydroxyalkyl)ferrocenylphosphine ligand was found to be a highly regio-and stereoselective catalyst for the asymmetric allylic amination of 2-butenyl acetates with benzylamine, the nucleophilicattack of the amine taking place selectively on the more substituted end of the π-allylpalladium intermediate to give optically active 3-benzyamino- 1-butene of up to 84%