1.1: thionyl chloride / 5 h / Reflux 2.1: triethylamine / ethyl acetate / 1 h / 0 - 20 °C 3.1: sodium hydride / N,N-dimethyl-formamide / 0 °C / Inert atmosphere 3.2: 2 h / 0 - 20 °C / Inert atmosphere 4.1: di-μ-chlorobis [5-hydroxy-2-[1-(hydroxyimino)ethyl]phenyl]palladium(II) dimer; potassium carbonate / N,N-dimethyl acetamide / 72 h / 140 °C / Inert atmosphere View Scheme

1.1: triethylamine / ethyl acetate / 1 h / 0 - 20 °C 2.1: sodium hydride / N,N-dimethyl-formamide / 0 °C / Inert atmosphere 2.2: 2 h / 0 - 20 °C / Inert atmosphere 3.1: di-μ-chlorobis [5-hydroxy-2-[1-(hydroxyimino)ethyl]phenyl]palladium(II) dimer; potassium carbonate / N,N-dimethyl acetamide / 72 h / 140 °C / Inert atmosphere View Scheme