The Asymmetric Aza-Claisen Rearrangement: Development of Widely Applicable Pentaphenylferrocenyl Palladacycle Catalysts
作者:Daniel F. Fischer、Assem Barakat、Zhuo-qun Xin、Matthias E. Weiss、René Peters
DOI:10.1002/chem.200900712
日期:2009.9.7
has a broader substrate tolerance than all previously known catalyst systems for asymmetric aza‐Claisen rearrangements. Our investigations also reveal that subtle changes can have a big impact on the activity. With the enhanced catalyst activity, the asymmetric aza‐Claisen rearrangement has a very broad scope: the methodology not only allows the formation of highly enantioenriched primary allylic amines
Cobalt-Catalyzed Regio- and Enantioselective Allylic Amination
作者:Samir Ghorai、Sahadev Shrihari Chirke、Wen-Bin Xu、Jia-Feng Chen、Changkun Li
DOI:10.1021/jacs.9b06035
日期:2019.7.24
earth-abundant cobalt-catalyzed highly branched- and enantioselectiveallylicamination of racemic branched allylic car-bonates bearing alkyl groups with both aromatic and aliphatic amines have been developed. The process allows rapid access of allylic amines in high yields with exclusively branched selectivity and excellent enantioselectivities (normally 99% ee) under mild reaction conditions.
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
DOI:10.1002/anie.200601731
日期:2006.8.25
Catalytic Asymmetric Rearrangement of Allylic <i>N</i>-Aryl Trifluoroacetimidates. A Useful Method for Transforming Prochiral Allylic Alcohols to Chiral Allylic Amines
作者:Larry E. Overman、Carolyn E. Owen、Mary M. Pavan、Christopher J. Richards
DOI:10.1021/ol0271786
日期:2003.5.1
useful method for the conversion of prochiral allylic alcohols to chiral allylic amines of high enantiopurity is reported. N-(4-Methoxyphenyl)trifluoroacetimidates are excellent substrates for the palladium(II)-catalyzed allylicimidaterearrangement as the allylic trifluoroacetamide products can be deprotected in two steps to provide chiral nonracemic allylic amines. Di-mu-chlorobis[(eta(5)-(S)-(pR)-