[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。
First Efficient Two-Step/One-Pot Zirconium (IV)isopropoxide–Mediated Reductive Amination of Carbonyl Compounds
作者:Cyril Pieri、Jean Michel Brunel
DOI:10.2174/1570180812666141215215120
日期:2015.5.7
An efficient method for the synthesis of various primary and secondary amines through a zirconium(IV) isopropoxide–mediated reductive amination reaction of aldehydes and ketones is reported. A series of different aldehydes, ketones and amines were used leading to the expected amino products in moderate to excellent yields. The mechanistic rationale of this reaction has been postulated through the formation
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。
Direct Reductive Amination from Ketones, Aldehydes to Synthesize Amines Using N, S-Dual Doped Co/C Catalyst
As a key intermediate in natural products and pharmaceutics, N-(R, R)-phenethyl-1-indane was directly prepared by one-potreductive amination of 1-indanone and R-( +)-α-phenethylamine using abundant molecularhydrogen as a reductant. Compared with the traditional noble metal catalyst, the Co-VB1(1:2)/C-900 catalysts showed higher selectivity in this reaction, and generated the N-(R, R)-phenethyl-1-indane
N -( R , R )-phenethyl-1-indane作为天然产物和医药的关键中间体,利用丰富的分子氢,通过一锅还原胺化 1-茚满酮和R -( +)-α-苯乙胺直接制备N -( R , R )-phenethyl-1-indane作为还原剂。与传统贵金属催化剂相比,Co-VB 1 (1:2)/C-900催化剂在该反应中表现出更高的选择性,并以高收率生成N- ( R , R )-苯乙基-1-茚满。Co-VB 1 (1:2)/C-900 催化剂是通过盐酸硫胺素 (VB 1 ) 的改性制备的) 作为氮源和硫源。同时,催化剂可多次重复使用。N -( R , R )-苯乙基-1-茚满的合成具有成本效益和原子经济性。该催化剂还在一系列底物(从醛或酮)的还原胺化中表现出中等至良好的催化活性,以提供各种有价值的化合物。 图形概要
Synthesis of amine stereoisomers
申请人:INTERNATIONAL UNIVERSITY BREMEN GMBH
公开号:EP1640358A1
公开(公告)日:2006-03-29
The invention relates to methods for producing secondary and tertiary amine diastereomers and corresponding enantioenriched primary or secondary chiral amine products.