1: sodium hydroxide / diethyl ether; water / 0.5 h / 0 °C 2: tris-(dibenzylideneacetone)dipalladium(0); sodium acetate / benzonitrile / 1 h / 80 °C 3: lithium aluminium tetrahydride / tetrahydrofuran / 2.5 h / -78 - 60 °C / Inert atmosphere View Scheme