1: 73 percent / 3 h / Irradiation 2: 88 percent / NaOH / ethanol; H2O / 2 h / Ambient temperature 3: 1.) carbonyldi(imidazole) / 1.) THF, ambient temperature, 10 min, 2.) THF, 30 min 4: 53 percent / K2S2O8, Na2HPO4*2H2O / acetonitrile; H2O / 6 h / Heating 5: 68 percent / NaBH4 / methanol / 4 h / Ambient temperature View Scheme