Intramolecular Hydroamination of Unactivated Alkenes with Secondary Alkyl- and Arylamines Employing [Ir(COD)Cl]<sub>2</sub> as a Catalyst Precursor
作者:Kevin D. Hesp、Mark Stradiotto
DOI:10.1021/ol900174f
日期:2009.3.19
Commercially available [Ir(COD)Cl](2) is an effective precatalyst for the intramolecular hydroamination of a range of unactivated alkenes with pendant secondary alkyl- or arylamines, at relatively low loadings (typically 0.25-5.0 mol % Ir) and without the need for added ligands or other cocatalysts.
[Ir(COD)Cl]<sub>2</sub> as a Catalyst Precursor for the Intramolecular Hydroamination of Unactivated Alkenes with Primary Amines and Secondary Alkyl- or Arylamines: A Combined Catalytic, Mechanistic, and Computational Investigation
作者:Kevin D. Hesp、Sven Tobisch、Mark Stradiotto
DOI:10.1021/ja908316n
日期:2010.1.13
scrutinized computationally. An energetically demanding oxidative addition of the amine N-H bond to the Ir(I) center precludes the latter mechanism and instead activation of the olefin C=C bond prevails, with [Ir(COD)Cl(substrate)] M1 representing the catalytically competent compound. Notably, such an olefin activation mechanism had not previously been documented for Ir-catalyzed alkene hydroamination. The