1: 100 percent / sym-collidine / CH2Cl2 / 0.25 h / -78 °C 2: 99 percent / H2 / Rh-Al2O3 / tetrahydrofuran / 12 h / 760.05 Torr 3: 60 percent / Na(Hg) / methanol; H2O / 0.75 h 4: 75 percent / Et3N / CH2Cl2 / 0.17 h / -78 °C 5: 100 percent / H2; Et3N / Pd/C / ethyl acetate / 3 h / 760.05 Torr 6: Bu4NF / tetrahydrofuran / 12 h View Scheme