1.1: tetrakis(triphenylphosphine) palladium(0); hexamethyl-distannane / toluene / 16 h / 60 °C / Inert atmosphere 1.2: 16 h / 110 °C / Inert atmosphere 2.1: potassium phosphate; tetrakis(triphenylphosphine) palladium(0) / 1,4-dioxane; water / 16 h / 110 °C / Inert atmosphere 3.1: ammonium cerium (IV) nitrate / water; acetonitrile / 0 - 20 °C / Darkness 4.1: pyridine; bromine / chloroform / 8 h / 20 °C / Darkness; Inert atmosphere 5.1: sodium azide / N,N-dimethyl-formamide / 3 h / 0 °C / Darkness; Inert atmosphere 6.1: palladium 10 on activated carbon; hydrogen / methanol; ethyl acetate / 4 h / 20 °C / Darkness; Inert atmosphere View Scheme

pyridine-2,6-dicarboxylate N-oxide; ammonium cerium(IV) nitrate in water; acetonitrile T=0 - 5°C; 0.5 h;

tetrakis(triphenylphosphine) palladium(0) in toluene T=60°C; Inert atmosphere;