1.1: n-butyllithium / tetrahydrofuran / 2 h / 0 °C / Inert atmosphere 1.2: 6 h / -78 - 20 °C / Inert atmosphere 2.1: palladium 10 on activated carbon; hydrogen / methanol / 1 h / 20 °C 3.1: diisobutylaluminium hydride / toluene / 3 h / -78 °C / Inert atmosphere 3.2: 4 h / 20 °C / Saturated solution 4.1: samarium diiodide / tetrahydrofuran; tert-butyl alcohol / 5 h / -78 °C / Inert atmosphere 5.1: hydrogenchloride / methanol / 4 h / 20 °C 6.1: palladium 10 on activated carbon; formic acid / methanol / 12 h / Inert atmosphere View Scheme