A ferrocenyl palladacycle complex has been identified as a highly enantioselective catalyst for 1,2-additions of a diverse range of alkynes to imines (39 examples) providing nearly enantiopure propargylic amine derivatives. Compared to known methods turnover numbers could be increased by ca. 2–3 orders of magnitude.
<i>C</i><sub>2</sub>-Symmetric Bicyclo[3.3.1]nonadiene as a Chiral Ligand for Rhodium-Catalyzed Asymmetric Arylation of <i>N</i>-(4-Nitrobenzenesulfonyl)arylimines
Asymmetric synthesis of diarylmethylamines with high enantioselectivity (95-99% ee) was realized by use of a new C-2-symmetric diene ligand. (1R,5R)-2,6-diphenylbicyclo[3.3.1]nona-2,6-diene (Ph-bnd*), for the rhodium-catalyzed asymmetric arylation of N(4-nitrobenzenesulfony)arylimines with arylboroxines.