1: 96 percent / NaI / acetone / 72 h / Heating 2: 98 percent / Bu3SnH / tetrahydrofuran / 18 h / Ambient temperature 3: 396 mg / 5percent KOH-MeOH / tetrahydrofuran / 1 h / Ambient temperature 4: pyridine / 2 h / Ambient temperature 5: 1.) BF3-THF complex, 2.) 2N NaOH, 30percent H2O2, 3.) pyridinium chloroformate 6: 209 mg / LiBr / dimethylformamide / 1 h / Heating 7: 220 mg / OsO4, N-methylmorpholine N-oxide / 2-methyl-propan-2-ol; tetrahydrofuran; H2O / 3 h 8: 70percent AcOH / H2O / 4 h / 65 °C View Scheme