Development of a new class of (1S,3R,4R)-2-azabicyclo[2.2.1]heptane-oxazoline ligands and their application in asymmetric transfer hydrogenation
摘要:
New 2-aza-norbomane-oxazoline compounds were synthesized and evaluated as ligands in the transfer hydrogenation of acetophenone. The best catalyst prepared in situ from [IrCl2(COD)](2) and a ligand afforded 1-(S)-phenylethanol in good yields and 79% ee. (C) 2004 Published by Elsevier Ltd.
Asymmetric Hydrogenation of Imines and Olefins Using Phosphine-Oxazoline Iridium Complexes as Catalysts
作者:Anna Trifonova、Jarle S. Diesen、Pher G. Andersson
DOI:10.1002/chem.200500942
日期:2006.3.1
Herein we describe the synthesis of a new class of chiral phosphine-oxazolines and their application as ligands in iridium-catalyzed hydrogenations. Mechanistic aspects of olefin hydrogenation with this class of iridiumcatalysts are discussed and a selectivity model to help rationalize the results obtained is also presented.
Development of a new class of (1S,3R,4R)-2-azabicyclo[2.2.1]heptane-oxazoline ligands and their application in asymmetric transfer hydrogenation
作者:Anna Trifonova、Klas E Källström、Pher G Andersson
DOI:10.1016/j.tet.2004.01.102
日期:2004.4
New 2-aza-norbomane-oxazoline compounds were synthesized and evaluated as ligands in the transfer hydrogenation of acetophenone. The best catalyst prepared in situ from [IrCl2(COD)](2) and a ligand afforded 1-(S)-phenylethanol in good yields and 79% ee. (C) 2004 Published by Elsevier Ltd.