1.1: iodine; magnesium / tetrahydrofuran / 3 h / 30 - 40 °C 1.2: -20 - 20 °C 2.1: hydrogen / 5 palladium on charcoal / methanol / 4 h / 40 °C / 3750.38 Torr / Autoclave; Inert atmosphere 3.1: sodium hydroxide; water / toluene / 3 h / 60 °C 3.2: 2 h / 20 - 30 °C View Scheme