Rhodium-Catalyzed Regioselective Amination of Secondary Allylic Trichloroacetimidates with Unactivated Aromatic Amines
作者:Jeffrey S. Arnold、Robert F. Stone、Hien M. Nguyen
DOI:10.1021/ol1019025
日期:2010.10.15
The use of unactivated aromatic amines in the rhodium-catalyzed regioselective amination of secondary allylic trichloroacetimidates is explored. The desired N-arylamines are obtained in high yields and regioselectivity, favoring the branched amination products. The presence of the trichloroacetimidate leaving group was found to be critical for successful regioselective amination reactions with unactivated
Traceless Benzylic C−H Amination via Bifunctional
<i>N</i>
‐Aminopyridinium Intermediates
作者:Pritam Roychowdhury、Roberto G. Herrera、Hao Tan、David C. Powers
DOI:10.1002/anie.202200665
日期:2022.7.11
C−Hamination chemistry viatracelessbifunctional nitrogen activation is reported. Sequential C−H aminopyridylation followed by Ni-catalyzed cross-coupling with aryl boronic acids affords the products of aryl nitrene insertion into C−H bonds. These products are unavailable by direct nitrene insertion due to the intrinsic instability of aryl nitrenes. The described method can be applied in the context