1: 100 percent / LDA, HMPA / tetrahydrofuran / 1.) -78 deg C, 30 min.; 2.) room temp., 1h 2: 100 percent / 30percent H2O2 / CH2Cl2 3: 88 percent / sodium methoxide / methanol / 5 h / Ambient temperature 4: 95 percent / H2 / Lindlar catalyst / ethyl acetate / 760 Torr View Scheme