1: 95 percent / NaNO2, AcOH, Ac2O / 2 h / Ambient temperature 2: 91 percent / Heating 3: 87 percent / BCl3 / CH2Cl2 / a) -78 deg C, 3 h, b) RT, overnight 4: 93 percent / pyridine / 48 h / Ambient temperature 5: p-TsOH, hexamethyldisilazane, NH3 / 120 h / 155 - 160 °C 6: 50percent aq. MeOH / 4 h / Heating 7: 100 percent / HBr / dioxane / 20 h View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 81 percent / MgO, H₂ / 10percent Pd/C / dioxane / 2585.7 Torr<br />2: 89 percent / H₂ / Raney Ni / acetic acid / 2585.7 Torr<br /> <br /> &nbsp;