Direct Aryl C−H Amination with Primary Amines Using Organic Photoredox Catalysis
作者:Kaila A. Margrey、Alison Levens、David A. Nicewicz
DOI:10.1002/anie.201709523
日期:2017.12.4
photoredox catalyst under an aerobic atmosphere. A wide variety of primary amines, including amino acids and more complex amines are competent coupling partners. Various electron‐rich aromatics and heteroaromatics are useful scaffolds in this reaction, as are complex, biologically active arenes. We also describe the ability to functionalize arenes that are not oxidized by an acridinium catalyst, such as
Chiral Phosphoric Acid Catalyzed Enantioselective Synthesis of α-Tertiary Amino Ketones from Sulfonium Ylides
作者:Wengang Guo、Yuzheng Luo、Herman H.-Y. Sung、Ian D. Williams、Pingfan Li、Jianwei Sun
DOI:10.1021/jacs.0c07210
日期:2020.8.19
approach for the synthesis of chiral α-amino ketones, which is particularly useful for the less accessible acyclic α-tertiary cases. By a protonation-amination sequence, our approach represents a rare asymmetric H-heteroatom bond insertion by α-carbonyl sulfonium ylides, an attractive surrogate of diazocarbonyls. The mild intermolecular C-N bond formation was catalyzed by chiral phosphoric acids with excellent
Synthesis of enantiomerically-enriched N-aryl amino-amides via a Jocic-type reaction
作者:Christian Hobson、Michael S. Perryman、Gavin Kirby、Guy J. Clarkson、David J. Fox
DOI:10.1016/j.tetlet.2018.09.046
日期:2018.10
Enantiomerically-enriched secondary trichloromethyl-alcohols react with aryl amines to give enantiomerically-enriched α-N-arylamino-acid derivatives. The intermediate acid chlorides can react in situ with aryl or, regioselectively, with alkyl amines to give aryl or alkyl α-N-arylamino amides.