Copper-Catalyzed Electrophilic Amination of Functionalized Diarylzinc Reagents
作者:Ashley M. Berman、Jeffrey S. Johnson
DOI:10.1021/jo048168g
日期:2005.1.1
The copper-catalyzed electrophilicamination of functionalized diarylzinc reagents with O-acyl hydroxylamines allows for the preparation of functionalized tertiary arylamines in high yields, and is noteworthy for the mild reaction conditions employed. The functionalized diarylzinc reagents were prepared via an iodine/magnesium exchange of the corresponding aryl iodide followed by transmetalation of
Copper-Catalyzed Electrophilic Amination of Organozinc Nucleophiles: Documentation of <i>O</i>-Benzoyl Hydroxylamines as Broadly Useful R<sub>2</sub>N(+) and RHN(+) Synthons
作者:Ashley M. Berman、Jeffrey S. Johnson
DOI:10.1021/jo051999h
日期:2006.1.1
isolated analytically pure after a simple extractive workup. The amination process is shown to tolerate a significant degree of steric demand. The amination of nominally unreactive Caryl−H bonds via a sequential directedorthometalation/transmetalation/catalytic amination reaction sequence is detailed. The direct Cu-catalyzed amination of Grignard reagents using cocatalysis by ZnCl2 is described.