1: 62 percent / baker's yeast; sucrose; K2CO3 / H2O; ethanol / 90 h / 15 °C 2: 87 percent / NBS / acetonitrile / 0.5 h / 20 °C 3: potassium tert-butoxide / tetrahydrofuran / 0.25 h / 20 °C 4: 2.17 g / NBS / tetrahydrofuran / 1 h / 20 °C View Scheme

1: 40 percent / baker's yeast; sucrose / aq. ethanol / 24 h / 20 °C 2: 87 percent / NBS / acetonitrile / 0.5 h / 20 °C 3: t-BuOK / tetrahydrofuran / 0.5 h / 0 °C 4: NBS / 1 h / 20 °C 5: H(+) / acetonitrile / 1 h / 20 °C 6: K2CO3 / dimethylformamide / 2 h / 20 °C 7: 62 percent / H2 / 20percent Pd(OH)2/C / methanol / 3.5 h / 20 °C 8: H2O / 0.25 h / 80 °C View Scheme

1: 62 percent / baker's yeast; sucrose; K2CO3 / H2O; ethanol / 90 h / 15 °C 2: 87 percent / NBS / acetonitrile / 0.5 h / 20 °C 3: potassium tert-butoxide / tetrahydrofuran / 0.25 h / 20 °C 4: 2.17 g / NBS / tetrahydrofuran / 1 h / 20 °C 5: aq. HCl / acetonitrile / 1 h / 20 °C 6: 1.58 g / K2CO3 / dimethylformamide / 1 h / 20 °C 7: 62 percent / H2 / Pd(OH)2/C / methanol / 4 h / 20 °C View Scheme