potassium hydroxide; hydrazine in diethylene glycol 4 h; Heating;

1.1: N,N,N',N,-tetramethylethylenediamine; n-butyllithium / tetrahydrofuran; hexane / 3 h / -78 - 20 °C / |Inert atmosphere 1.2: 12 h / 20 °C / |Inert atmosphere 2.1: ammonium chloride / water 3.1: palladium diacetate; potassium carbonate; iodine / acetonitrile / 12 h / 20 - 80 °C / |Schlenk technique; |Inert atmosphere; |Sealed tube View Scheme