Synthesis of 1<i>H</i>-Indole-3-carboxamidines through a Palladium-Catalyzed Three-Component Reaction Involving Isocyanide Insertion as a Key Step
作者:Ziwei Hu、Jian Wang、Dongdong Liang、Qiang Zhu
DOI:10.1002/adsc.201300532
日期:2013.11.11
AbstractA three‐component reaction involving isocyanides, o‐alkynyltrifluoroacetanilides, and amines for the efficient synthesis of 2‐substituted 1H‐indole‐3‐carboxamidines has been developed. The reaction proceeds through intramolecular aminopalladation of alkynes activated by isocyanide‐ligated palladium(II) species. Dioxygen acts as the sole oxidant to regenerate the active palladium(II) species.magnified image