Verfahren zur Herstellung von Phosphiten und Übergangsmetallkomplexen
申请人:Saltigo GmbH
公开号:EP1394168B1
公开(公告)日:2008-05-21
Why Are BINOL-Based Monophosphites Such Efficient Ligands in Rh-Catalyzed Asymmetric Olefin Hydrogenation?
作者:Manfred T. Reetz、Andreas Meiswinkel、Gerlinde Mehler、Klaus Angermund、Martin Graf、Walter Thiel、Richard Mynott、Donna G. Blackmond
DOI:10.1021/ja052025+
日期:2005.7.1
based on BINOL-derived monodentate phosphites have resulted in an efficient and economically attractive preparative method, very little is known concerning the source of the unexpectedly high levels of enantioselectivity (ee often 90-99%). The present mechanistic study, which includes the NMR characterization of the precatalysts, kinetic measurements with focus on nonlinear effects, and DFT calculations