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 %.
A Direct and Stereoretentive Synthesis of Amides from Cyclic Alcohols
作者:Deboprosad Mondal、Luca Bellucci、Salvatore D. Lepore
DOI:10.1002/ejoc.201101165
日期:2011.12
Chlorosulfites prepared in situ using thionyl chloride react with nitrile complexes of titanium (IV) fluoride to give a one-pot conversion of alcohols into amides. For the first time, amides are obtained from cyclic alcohols with stereoretention. Critical to the design of these new Ti(IV) reactions has been the use of little explored Ti(IV) nitrile complexes which are thought to chelate chlorosulfites