Copper-Mediated<i>ortho</i>-Nitration of (Hetero)Arenecarboxylates
作者:Dmitry Katayev、Kai F. Pfister、Timo Wendling、Lukas J. Gooßen
DOI:10.1002/chem.201403363
日期:2014.8.4
Various (hetero)arenecarboxylic acids were converted to the corresponding Daugulis amides and nitrated selectively in the ortho‐position in the presence of [CuNO3(PPh3)2] and AgNO2 at 50 °C. A microwave‐assisted saponification allows regenerating the carboxylate group within minutes, which may then be removed tracelessly by protodecarboxylation, or substituted by aryl‐ or alkoxy‐groups via decarboxylative