180747-37-9Relevant academic research and scientific papers
Copper-Catalyzed Enantioselective Sonogashira Type Coupling of Alkynes with α-Bromoamides
Chen, Bin,Mo, Xueling,Zhang, Guozhu
supporting information, p. 13998 - 14002 (2020/06/10)
An asymmetric copper-catalyzed Sonogashira type coupling between alkynes and α-bromoamides has been developed. This method represents a facile approach to synthetically useful β, γ-alkynyl amides from two readily available starting materials in a highly enantioselective manner. A Bisoxazoline diphenylanaline (BOPA) serves as the effective chiral ligand. Preliminary mechanistic studies support the formation of alkyl radical species.
Cobalt-Catalyzed α-Arylation of Substituted α-Bromo α-Fluoro β-Lactams with Diaryl Zinc Reagents: Generalization to Functionalized Bromo Derivatives
Br?se, Stefan,Chen, Hi-Yung,Cossy, Janine,Koch, Vanessa,Lei, Aiwen,Lorion, Mélanie M.,Nieger, Martin
supporting information, p. 13163 - 13169 (2020/09/23)
A cobalt-catalyzed cross-coupling of α-bromo α-fluoro β-lactams with diarylzinc or diallylzinc reagents is herein disclosed. The protocol proved to be general, chemoselective and operationally simple allowing the C4 functionalization of β-lactams. The substrate scope was expanded to α-bromo lactams and amides, α-bromo lactones and esters as well as N- and O-containing heterocycles.
Iron-Catalyzed Intramolecular C-H Amination of α-Azidyl Amides
Zhao, Xiaopeng,Liang, Siyu,Fan, Xing,Yang, Tonghao,Yu, Wei
supporting information, p. 1559 - 1563 (2019/03/20)
Iron-catalyzed intramolecular C-H amination of aliphatic azides has recently emerged as a powerful tool for the preparation of nitrogen heterocycles. This paper reports that α-azidyl amides can be converted in high efficacy to imidazolinone compounds via intramolecular C(sp3)-H amination by the action of a simple catalytic system composed of FeCl2 and a β-diketiminate ligand. The reactions provide a simple and atom-economical approach toward polysubstituted imidazolinones.
Cobalt-Catalyzed Cross-Coupling of α-Bromo Amides with Grignard Reagents
Barde,Guérinot,Cossy
supporting information, p. 6068 - 6071 (2017/11/28)
A cobalt-catalyzed cross-coupling between α-bromo amides and Grignard reagents is disclosed. The reaction is general and allows access to a large variety of α-aryl and β,γ-unsaturated amides. Some mechanistic investigations have been undertaken to determine the nature of the intermediate species.
Samarium(II) iodide mediated intermolecular coupling reactions of N,N-dibenzyl-α-haloamides with carbonyl compounds
Aoyagi, Yutaka,Asakura, Rie,Kondoh, Nobuko,Yamamoto, Rieko,Kuromatsu, Takeshi,Shimura, Ai,Ohta, Akihiro
, p. 970 - 974 (2007/10/03)
Samarium(II) iodide mediated coupling reactions of α-haloamides with carbonyl compounds are found to give N,N-dibenzyl-β-hydroxyamides (4a-i, 5a-i, and 6a) in good yields under mild reaction conditions. The transformation of 4a and 5a to N,N-dibenzyl-3-phenylpropanamide (7) and β-hydroxycarboxylic acid (8), respectively, are described.
