Decarboxylative <i>ipso</i>
Amination of Activated Benzoic Acids
作者:Martin Pichette Drapeau、Janet Bahri、Dominik Lichte、Lukas J. Gooßen
DOI:10.1002/anie.201812068
日期:2019.1.14
the ligand and either air or N‐methylmorpholine N‐oxide as the oxidant, electron‐deficient benzoic acids undergo oxidative decarboxylative coupling with unprotected amines. This operationally simple aniline synthesis is widely applicable with respect to the amine and gives good yields, even on multigram scale. The orthogonality of this reaction to other Pd‐catalyzedcross‐couplings allows the concise
A new route to 2-(trifluoromethyl)benzimidazoles is described which involves the condensation of (2-arylamino)iminophosphoranes with trifluoroacetyl esters or trifluoroacetic anhydride. The method allows the synthesis of the title compounds from simple nitroarenes without the use of separate reduction steps and metallic reagents or expensive catalysts.