[EN] SYNTHESIS OF AMINE STEREOISOMERS<br/>[FR] SYNTHESE DE STEREOISOMERES D'AMINES
申请人:INTERNAT UNIVERSITY BREMEN GMB
公开号:WO2006030017A1
公开(公告)日:2006-03-23
The invention relates to methods for producing secondary and tertiary amine diastereomers and corresponding enantiopure or enantioenriched primary or secondary chiral amine products.
这项发明涉及生产二级和三级胺对映异构体以及相应的对映纯或对映富集的一级或二级手性胺产品的方法。
Evolution of Titanium(IV) Alkoxides and Raney Nickel for Asymmetric Reductive Amination of Prochiral Aliphatic Ketones
作者:Thomas C. Nugent、Vijay N. Wakchaure、Abhijit K. Ghosh、Rashmi R. Mohanty
DOI:10.1021/ol051909v
日期:2005.10.1
[reaction: see text] A new method for the one-pot asymmetricreductive amination of prochiral aliphatic ketones has been developed. The previously unexplored reagent combination of Ti(O(i)Pr)(4)/Raney Ni/H(2) in the presence of (R)- or (S)-alpha-methylbenzylamine provides good to excellent yield (76-90%) and diastereomeric excess (72-98%). The second step, hydrogenolysis, provides the corresponding
[反应:见正文]已经开发了一种用于前手性脂肪族酮的一锅式不对称还原胺化的新方法。Ti(O(i)Pr)(4)/ Raney Ni / H(2)在(R)-或(S)-α-甲基苄胺的存在下未经探索的试剂组合可提供良好至极好的收率(76-90 %)和非对映异构体过量(72-98%)。第二步是氢解,以高收率(88-93%)提供了相应的伯胺,并且毫不妥协的对映体过量。
PROCESS FOR PREPARING AMINE COMPOUND
申请人:Watanabe Masahito
公开号:US20120065426A1
公开(公告)日:2012-03-15
The present invention aims to provide a practical process for preparing amine compounds through a generalized highly-diastereoselective reductive amination reaction. The present invention relates to a process for diastereoselectively preparing an amine compound using a catalyst employed in a reductive amination reaction, comprising a specific organometallic compound represented by the following general formula (1):
Asymmetric reduction of enantiopure imines with zinc borohydride: stereoselective synthesis of chiral amines
作者:Cristina Cimarelli、Gianni Palmieri
DOI:10.1016/s0957-4166(00)00209-3
日期:2000.6
The first application of zincborohydride in the reduction of enantiopure imines for the stereoselective preparation of both the enantiomers of secondary amines is described. A possible explanation of the stereoselectivity and of the reaction mechanism is suggested on the basis of theoretical calculations.
PROCESS FOR DIASTEREOSELECTIVE CONVERSION OF CHIRAL IMINES
申请人:Siegel Wolfgang
公开号:US20100274053A1
公开(公告)日:2010-10-28
Diastereoselective conversion of chiral imines of the formula I to amines of the formula II
where the R
1
to R
4
radicals are each as defined in the description and R
1
and R
2
are different than one another, by converting the imine of the formula I in the presence of hydrogen and a heterogeneous copper-containing catalyst.