Pd-Catalyzed C–H aziridination of 3,3,5,5-tetrasubstituted piperazin-2-ones
作者:Thomas A. Alanine、Stephen Stokes、Craig A. Roberts、James. S. Scott
DOI:10.1039/c7ob02486j
日期:——
A palladium mediated C–H aziridination reaction of 3,3,5,5-substituted-piperazin-2-ones has been developed using phenyliodonium diacetate (PIDA) and succinic acid to give synthetically useful bicyclic aziridines, in moderate to good yields. Succinic acid was found to be key for selectively promoting C–N bond formation (aziridination) and suppressing competitive acetoxylation. Analysis of the reaction
Palladium-Catalyzed Enantioselective C–H Activation of Aliphatic Amines Using Chiral Anionic BINOL-Phosphoric Acid Ligands
作者:Adam P. Smalley、James D. Cuthbertson、Matthew J. Gaunt
DOI:10.1021/jacs.6b12234
日期:2017.2.1
design of an enantioselective Pd(II)-catalyzed C-H amination reaction is described. The use of a chiral BINOL phosphoric acid ligand enables the conversion of readily available amines into synthetically valuable aziridines in high enantiomeric ratios. The aziridines can be derivatized to afford a range of chiral amine building blocks incorporating motifs readily encountered in pharmaceutically relevant