1: 75 percent / AlBr3, NaI / acetonitrile / 0.25 h / 0 °C 2: pyridine / 2 h / 70 - 80 °C 3: KOH / pyridine / 80 °C 4: 87 percent / conc. H2SO4, acetic acid / 1 h / 50 °C 5: 71 percent / dimethyldioxirane / acetone / 0 °C 6: 96 percent / K2CO3 / acetone / Heating 7: 91 percent / AlCl3 / acetonitrile / 0.5 h / Ambient temperature 8: 90 percent / K2CO3 / methanol / 1.5 h / Heating 9: 90 percent / H2 / 10percent Pd/C / methanol; ethyl acetate / Ambient temperature View Scheme

1: 75 percent / AlBr3, NaI / acetonitrile / 0.25 h / 0 °C 2: pyridine / 2 h / 70 - 80 °C 3: KOH / pyridine / 80 °C 4: 97 percent / conc. H2SO4, acetic acid / 1 h / 50 °C 5: 56 percent / dimethyldioxirane / acetone / 0 °C 6: 98 percent / K2CO3 / acetone / Heating 7: 85 percent / AlCl3 / acetonitrile / 0.5 h / Ambient temperature 8: 85 percent / K2CO3 / methanol / 1.5 h / Heating 9: 76 percent / H2 / 10percent Pd/C / methanol; ethyl acetate / Ambient temperature View Scheme

1: 75 percent / AlBr3, NaI / acetonitrile / 0.25 h / 0 °C 2: pyridine / 2 h / 70 - 80 °C 3: KOH / pyridine / 80 °C 4: 90 percent / conc. H2SO4, acetic acid / 1 h / 50 °C 5: 67 percent / dimethyldioxirane / acetone / 0 °C 6: 92 percent / K2CO3 / acetone / Heating 7: 93 percent / AlCl3 / acetonitrile / 0.5 h / Ambient temperature 8: 60 percent / K2CO3 / methanol / 1.5 h / Heating 9: 87 percent / H2 / 10percent Pd/C / methanol; ethyl acetate / Ambient temperature View Scheme

1: 75 percent / AlBr3, NaI / acetonitrile / 0.25 h / 0 °C 2: pyridine / 2 h / 70 - 80 °C 3: KOH / pyridine / 80 °C 4: 92 percent / conc. H2SO4, acetic acid / 1 h / 50 °C 5: 74 percent / dimethyldioxirane / acetone / 0 °C 6: 85 percent / K2CO3 / acetone / Heating 7: 83 percent / AlCl3 / acetonitrile / 0.5 h / Ambient temperature 8: 88 percent / K2CO3 / methanol / 1.5 h / Heating 9: 89 percent / H2 / 10percent Pd/C / methanol; ethyl acetate / Ambient temperature View Scheme

1: 75 percent / AlBr3, NaI / acetonitrile / 0.25 h / 0 °C 2: pyridine / 2 h / 70 - 80 °C 3: KOH / pyridine / 80 °C 4: 97 percent / conc. H2SO4, acetic acid / 1 h / 50 °C 5: 70 percent / dimethyldioxirane / acetone / 0 °C 6: 81 percent / K2CO3 / acetone / Heating 7: 97 percent / AlCl3 / acetonitrile / 0.5 h / Ambient temperature 8: 96 percent / K2CO3 / methanol / 1.5 h / Heating 9: 74 percent / H2 / 10percent Pd/C / methanol; ethyl acetate / Ambient temperature View Scheme