1: 87 percent / 3.0M t-BuOOH / VO(acac)2 / CH2Cl2; toluene / 18 h / Heating 2: 82 percent / Bu4NF / tetrahydrofuran / 0.03 h 3: 84 percent / sodium thiophenolate / dimethylsulfoxide / 20 h / Ambient temperature 4: 72 percent / H2 / Raney-Ni / ethyl acetate / 3420 Torr 5: 90 percent / 1) KOH, 2) 80percent AcOH / tetrahydrofuran; H2O / 1) 1 h, 2) 15 h, r.t. View Scheme