1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.5 h / Cooling with ice 1.2: 2 h / 20 °C 2.1: tris(dibenzylideneacetone)dipalladium(0) chloroform complex; tris-(o-tolyl)phosphine / tetrahydrofuran; hexane / 0.67 h / 20 - 60 °C / Inert atmosphere 3.1: (1S)-10-camphorsulfonic acid / methanol; dichloromethane / 24 h / 20 °C / Inert atmosphere 4.1: (CuOTf)2*C6H5CH3 / acetonitrile / 1 h / 20 °C 5.1: pyridinium chlorochromate / dichloromethane / 3 h / 20 °C 6.1: diphenyl diselenide; dihydrogen peroxide / dichloromethane / 24 h / 20 °C / Inert atmosphere 6.2: 16 h 7.1: diphenyl diselenide; dihydrogen peroxide / dichloromethane / 48 h / 20 °C / Inert atmosphere 7.2: 16 h 8.1: palladium 10 on activated carbon; hydrogen / ethyl acetate / 1 h / 20 °C / 760.05 Torr View Scheme