Chiral Phosphoric Acid Catalyzed Kinetic Resolution of Indolines Based on a Self-Redox Reaction
作者:Kodai Saito、Takahiko Akiyama
DOI:10.1002/anie.201510692
日期:2016.2.24
A strategy for oxidative kineticresolution of racemic indolines was developed, employing salicylaldehyde derivative as the pre‐resolving reagent and chiral phosphoric acid as the catalyst. The iminium intermediate, formed by the condensation reaction of an enantiomer of indoline with salicylaldehyde derivative, was hydrogenated by the same enantiomer of indoline to afford another enantiomer of indoline
Direct Synthesis of Unprotected Indolines Through Intramolecular sp<sup>3</sup> C−H Amination Using Nitroarenes as Aryl Nitrene Precursors
作者:Giedre Sirvinskaite、Celine S. Nardo、Patrick Müller、Aurelio C. Gasser、Bill Morandi
DOI:10.1002/chem.202301978
日期:2023.9.26
benzylic sp3 C−H amination is disclosed using aryl nitro compounds as aryl nitrene precursors. Organosilicon reagent N,N’-bis(trimethylsilyl)-4,4’-bipyridinylidene (Si-DHBP) served as an efficient reductant in the transformation, enabling the in situ generation of aryl nitrene species for the synthesis of 2-arylindolines from the corresponding nitroarene compounds.