Enantioselective Intramolecular Hydroarylation of Alkenes via Directed C−H Bond Activation
作者:Hitoshi Harada、Reema K. Thalji、Robert G. Bergman、Jonathan A. Ellman
DOI:10.1021/jo801098z
日期:2008.9.1
Highly enantioselective catalytic intramolecular ortho-alkylation of aromatic imines containing alkenyl groups tethered at the meta position relative to the imine directing group has been achieved using [RhCl(coe)2]2 and chiral phosphoramidite ligands. Cyclization of substrates containing 1,1- and 1,2-disubstituted as well as trisubstituted alkenes were achieved with enantioselectivities >90% ee for