1: 1.) LHMDS / 1.) THF, room temperature, 50 min, 2.) toluene, 2 h. 2: 76 percent / NaBH4, HCl / tetrahydrofuran; ethanol / 2 h / 0 °C 3: 94 percent / AcOH / 5 h / 150 °C 4: 82 percent / H2 / Pd-C / tetrahydrofuran; methanol / 10 h / 760 Torr View Scheme