Synthesis of Nearly Enantiopure Allylic Amines by Aza-Claisen Rearrangement ofZ-Configured Allylic Trifluoroacetimidates Catalyzed by Highly Active Ferrocenylbispalladacycles
作者:Sascha Jautze、Paul Seiler、René Peters
DOI:10.1002/chem.200701642
日期:2008.2.8
semihydrogenations of alkynes. Our catalyst, a C(2)-symmetric planar chiral bispalladacycle complex, is rapidly prepared from ferrocene in four simple steps. Key step of this protocol is an unprecedented highly diastereoselective biscyclopalladation providing dimeric macrocyclic complexes of fascinating structure. In the present study as little as 0.1 mol % of catalyst precursor were sufficient for most
Practical, Highly Active, and Enantioselective Ferrocenyl–Imidazoline Palladacycle Catalysts (FIPs) for the Aza-Claisen Rearrangement ofN-para-Methoxyphenyl Trifluoroacetimidates
作者:Matthias E. Weiss、Daniel F. Fischer、Zhuo-qun Xin、Sascha Jautze、W. Bernd Schweizer、René Peters