Palladium-Catalyzed Synthesis of Arylamines from Aryl Halides and Lithium Bis(trimethylsilyl)amide as an Ammonia Equivalent
作者:Sunwoo Lee、Morten Jørgensen、John F. Hartwig
DOI:10.1021/ol016333y
日期:2001.8.1
[reaction: see text]. A simple, palladium-catalyzed method to convert aryl halides to the parent anilines using lithium bis(trimethylsilyl)amide (LiN(SiMe3)2) is reported. The reaction is catalyzed by Pd(dba)2 and P(t-Bu)3 and can be run with as little as 0.2 mol % of catalyst. The reaction is faster than competing generation of benzyne intermediates and, therefore, provides the aniline products regiospecifically
A synthetic and mechanistic investigation into the cobalt(<scp>i</scp>) catalyzed amination of aryl halides
作者:Marshall R. Brennan、Dongyoung Kim、Alison R. Fout
DOI:10.1039/c4sc01257g
日期:——
in the reaction. Both stoichiometric and kinetic studies support the catalytic cycle involving a Co(I) complex. Catalytic reactions featuring Co(II) complexes resulted in undesired biaryl formation, a product that is not observed under standard catalytic conditions and any productive catalytic reactivity likely arises from an in situ reduction of Co(II) to Co(I). A Hammett study was carried out to differentiate