Organocatalytic asymmetric biomimetic transamination of aromatic ketone to optically active amine
作者:Ying Xie、Hongjie Pan、Xiao Xiao、Songlei Li、Yian Shi
DOI:10.1039/c2ob26782a
日期:——
An asymmetric biomimetic transamination of aromatic ketones to opticallyactive amines with o-HOPhCH2NH2 as amine source catalyzed by hydroquinine-derived chiral base is described. Up to 85% ee was obtained.
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 efficient Ru catalyst based on an achiral, very simple, and inexpensive amino alcohol ligand (2‐amino‐2‐methylpropan‐1‐ol) has been developed for the asymmetric transfer hydrogenation (ATH) of chiralN‐(tert‐butylsulfinyl)imines. This complex is able to catalyze the ATH of both aromatic and the most challenging aliphatic sulfinylimines by using isopropyl alcohol as the hydrogen source. The