Direct, Enantioselective Iridium-Catalyzed Allylic Amination of Racemic Allylic Alcohols
作者:Marc Lafrance、Markus Roggen、Erick M. Carreira
DOI:10.1002/anie.201108287
日期:2012.4.2
The direct route: Iridium‐catalyzed direct conversion of branched allylicalcohols into enantioenriched branched primary allylic amines is highly regio‐ and enantioselective (see scheme; coe=cyclooctene).
Catalytic Asymmetric Intramolecular Hydroacylation with Rhodium/Phosphoramidite-Alkene Ligand Complexes
作者:Thomas J. Hoffman、Erick M. Carreira
DOI:10.1002/anie.201104595
日期:2011.11.4
Give me a P: An asymmetricintramolecular Rh‐catalyzed hydroacylation reaction of pent‐4‐enals for the preparation of functionalized cyclopentanones in good yield and high enantioselectivity is described (see scheme, DCE=dichloroethane). This process uses rhodiumcomplexes featuring novel modular phosphoramidite–alkene ligands and achiral phosphine coligands.