1: 81 percent / 3.0M t-BuOOH / VO(acac)2 / CH2Cl2; toluene / 24 h / Ambient temperature 2: 84 percent / sodium thiophenolate / dimethylsulfoxide / 20 h / Ambient temperature 3: 72 percent / H2 / Raney-Ni / ethyl acetate / 3420 Torr 4: 90 percent / 1) KOH, 2) 80percent AcOH / tetrahydrofuran; H2O / 1) 1 h, 2) 15 h, r.t. View Scheme