A one-pot reaction for the transformation of common secondaryamides into amines with C–C bond formation is described. This method consists of in situ amide activation with Tf2O–partial reduction–addition of C-nucleophiles. The method is general in scope, which allows employing both hard nucleophiles (RMgX, RLi) and soft nucleophiles, as well as enolates. With the use of soft nucleophiles, the reaction
Direct Transformation of Secondary Amides into Secondary Amines: Triflic Anhydride Activated Reductive Alkylation
作者:Kai-Jiong Xiao、Ai-E Wang、Pei-Qiang Huang
DOI:10.1002/anie.201204098
日期:2012.8.13
transformation has been developed (see scheme; 2‐F‐Py=2‐fluoropyridine; Tf=trifluorosulfonyl). The amines are synthesized in good yields and the ketimine intermediates can be isolated before the reduction. This method should find applications in the synthesis of nitrogen‐containing bioactive molecules and medicinal agents.