1: 64 percent / tetrahydrofuran / -78 °C 2: pyridine / 6 h / Ambient temperature 3: water / H2SO4 / methanol / 30 h / Ambient temperature 4: 91 percent / n-butyllithium / tetrahydrofuran / 0 °C 5: water, oxalic acid / methanol / 4 h / Ambient temperature 7: m-chloroperbenzoic acid / CH2Cl2 / 4.5 h / Ambient temperature 8: LiAlH4 / diethyl ether / 1 h / Ambient temperature 9: pyridine / 80 °C 10: 0.5 h / 150 °C View Scheme