1: With sodium hydride in tetrahydrofuran 2: in 1,2-dichloro-benzene Heating; Further stages.;

1.1: aq. HCl; NaNO2 / acetonitrile / -5 °C 1.2: 583 mg / aq. K2CO3 / acetonitrile / 0 - 20 °C 2.1: PdCl2(PPh3)2; CuI; Et3N / 50 °C 3.1: 400 mg / K2CO3 / methanol; tetrahydrofuran / 0 - 20 °C 4.1: 96 percent / 1,2-dichloro-benzene / 16 h / 200 °C View Scheme

1: copper(l) iodide; potassium carbonate; N-methyl-2-(methylamino)ethylamine / 1,4-dioxane / 18 h / 90 °C / Inert atmosphere 2: sodium hydroxide / ethanol; water / 16 h / 70 °C View Scheme

copper(II) sulfate

1: N2H4 2: aqueous CuSO4 View Scheme

chloroform Erwaermen des Reaktionsprodukts mit wss. Na2CO3;