1.1: lithium hexamethyldisilazane / toluene / 1 h / 20 °C 1.2: 2.5 h / 20 °C 2.1: tetrabutyl-ammonium chloride; potassium carbonate / water; acetonitrile / 0.25 h / 20 °C 2.2: 24 h / 60 °C 3.1: sodium hydroxide / methanol; water / 3 h / 20 °C 3.2: 0.08 h View Scheme

sodium iodide in acetonitrile 3 h; Heating / reflux;