1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 1 h / Ambient temperature 2: 99 percent / RuO4 / CCl4; CH2Cl2 / 1 h / Ambient temperature 3: 99.6 percent / NaH / 1,2-dimethoxy-ethane / 2 h / Ambient temperature 4: 1.) acetic anhydride, p-toluenesulfonic acid, 2.) K2CO3 / 1.) RT, overnight, 2.) benzene, RT, overnight 5: pyridine / 168 h / 38 °C 6: aq. NaClO2, aq. NaH2PO4 / 2-methyl-propan-2-ol; various solvent(s) / 24 h / Ambient temperature 7: N,N-diisopropylethylamine / CH2Cl2 / 1 h / Ambient temperature 8: 76 percent / NaBH4 / tetrahydrofuran; various solvent(s) / 3 h / Ambient temperature 9: 75 percent / pyridinium dichromate / dimethylformamide / Ambient temperature 10: 95 percent / H2 / 5percent Pd/C / methanol / 1 h / Ambient temperature 11: 94 percent / 1 M aq. HCl / 1 h / Ambient temperature View Scheme