Asymmetric Synthesis of Chiral Primary Amines by Transfer Hydrogenation of <i>N</i>-(<i>tert</i>-Butanesulfinyl)ketimines
作者:David Guijarro、Óscar Pablo、Miguel Yus
DOI:10.1021/jo101057s
日期:2010.8.6
The diastereoselective reduction of (R)-N-(tert-butanesulfinyl)ketimines by a ruthenium-catalyzed asymmetrictransferhydrogenation process in isopropyl alcohol, followed by desulfinylation of the nitrogen atom, is an excellent method to prepare highly enantiomerically enriched α-branched primary amines (up to >99% ee) in short reaction times (1−4 h). (1S,2R)-1-Amino-2-indanol has been shown to be
A highly enantioselective intermolecular benzylic C(sp3)−H bond amination by using a chiral cationic copper catalyst and oxidant di-tert-butyl peroxide is reported. This mild, straightforward method can be used to transform an array of feedstock alkylarenes and amides into chiral amines with high enantioselectivities, and it has good functional group tolerance and a broad substrate scope.
Synthesis of Highly Enantiomerically Enriched Amines by Asymmetric Transfer Hydrogenation of N-(tert-Butylsulfinyl)Imines
作者:Guijarro, David、Pablo, Óscar、Yus, Miguel
DOI:10.15227/orgsyn.090.0338
日期:——
Merging Nucleophilic and Hydrogen Bonding Catalysis: An Anion Binding Approach to the Kinetic Resolution of Amines
作者:Chandra Kanta De、Eric G. Klauber、Daniel Seidel
DOI:10.1021/ja9079435
日期:2009.12.2
A new concept for asymmetric nucleophilic catalysis is presented. Acyl pyridinium salts derived from 4-(dimethylamino)pyridine (DMAP) and benzoic anhydride are rendered chiral via interaction with a chiral thiourea anion receptor. The power of this concept is demonstrated in the context of kinetic amine resolution.