1.1: LDA; bis(trimethylsilyl)peroxide / tetrahydrofuran / 4 h / -40 °C 1.2: 64 percent / tetrahydrofuran / 2 h / -40 - 20 °C 2.1: 70 percent / Lawesson's reagent / toluene / 3 h / 110 °C 3.1: 91 percent / Raney-Ni; H2 / tetrahydrofuran / 15 h / 20 °C 4.1: 97 percent / NaOAc / 17 h / 20 °C 5.1: 98 percent / H2 / PtO2 / methanol; ethyl acetate / 3 h / 2068.59 - 2327.17 Torr 6.1: 89 percent / Bu4NF / tetrahydrofuran / 0.5 h / 20 °C 7.1: 75 percent / DEAD; PPh3 / tetrahydrofuran / 24 h / 20 °C View Scheme