Asymmetric Strecker Reaction ofN-Benzhydrylimines Utilising New Tropos Biphenyldiol-Based Ligands
作者:Stefan Wünnemann、Roland Fröhlich、Dieter Hoppe
DOI:10.1002/ejoc.200700763
日期:2008.2
intermediates together with easily accessible N-arenesulfonylamino alcohols furnish a broad variety of 1,3-oxazolidines. These are applied as chiral tropos ligands in a titanium-mediated Strecker-type reaction of N-benzhydrylimines. A correlation between the ee values in the product and the diastereomeric ratio concerning the chiral axis of the ligand is made. Those substituents in the ligand which proved