1: (i) Mg, BrCH2CH2Br, (ii) /BRN= 1841168/, (iii) MCPBA 2: 140 °C / 1.5 Torr View Scheme

1: 1. Mg 2. CuI/α,α'-dipyridyl / 1. THF/0 deg C 2. THF/0 deg C/15 min 2: 88 percent / 30percent H2O2 / dioxane / Ambient temperature 3: 55 percent / (CF3CO)2O / 72 h / Ambient temperature 4: 84 percent / NaBH4 / aq. ethanol / 12 h / Ambient temperature View Scheme