Ruthenium Catalyzed Direct Asymmetric Reductive Amination of Simple Aliphatic Ketones Using Ammonium Iodide and Hydrogen
作者:Tamal Ghosh、Martin Ernst、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1002/ejoc.202000750
日期:2020.8.16
On the direct asymmetric reductive amination of aliphatic ketones to primary amines: By using Ru‐Binaphane as catalyst and NH4I as the amine source, it is possible to aminate prochiral aliphatic ketones with moderate ee values up to 74 %.
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