hydroalkylamination and hydroamidation of styrenes have been developed by NiH catalysis with a simple bioxazoline ligand under mild conditions. A wide range of enantioenriched benzylic arylamines, alkylamines and amides can be easily accessed by nitroarenes, hydroxylamines and dioxazolones, respectively as amination reagents. The chiral induction in these reactions is proposed to proceed through an enantiodifferentiating
One-pot five-component reactions of oxathiazolidine-S-oxides with mesitylmagnesiumbromide, lithium bis(trimethylsilyl)amide, aldehydes and Grignard reagents afford chiral nonracemic amines or sulfinamides in good yields and high stereoselectivities.
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 Catalysis of the Carbonyl-Amine Condensation: Kinetic Resolution of Primary Amines
作者:Sayantani Das、Nilanjana Majumdar、Chandra Kanta De、Dipti Sankar Kundu、Arno Döhring、Anika Garczynski、Benjamin List
DOI:10.1021/jacs.6b12176
日期:2017.2.1
Brønsted acid catalyzed kinetic resolution of primary amines is described that is based on the condensation between an amine and a carbonyl compound. 1,3-Diketones react with racemic α-branched amines to furnish the corresponding enantioenriched enaminone and recovered starting material. Good to excellent enantioselectivity was observed with both aromatic and aliphatic primary amines. This process
A series of C1-symmetric phosphine-phospholane ligands, 1-(disubstituted phosphino)-2-(phospholano)benzenes (5), which are called UCAPs, with an achiral phosphino group and a chiralphospholane which can be sterically and electricallyadjustable, has been designed and synthesized. In the asymmetric hydrogenation of (Z)-N-benzoyl-1-phenylpropenamine (3), the stereorecognition abilities of the 5d−e–Rh