1: 72 percent / conc. HNO3 / 10 - 15 °C 2: 52 percent / HCO2NH4 / 10percent Pd/C / methanol / 0.67 h / Ambient temperature 3: 1.) NaBH4 / 1.) 20 deg C, 2.) 80 deg C, 9 h 4: 40 percent / conc. NH3 / methanol / 360 h / Ambient temperature 5: 90 percent / pyridine / Ambient temperature 6: 25 percent / BBr3 / CH2Cl2 / -75 - 20 °C 7: 20 percent / 0.2 N aq. NaOH / 64 h / Ambient temperature View Scheme

1: 52 percent / HCO2NH4 / 10percent Pd/C / methanol / 0.67 h / Ambient temperature 2: 1.) NaBH4 / 1.) 20 deg C, 2.) 80 deg C, 9 h 3: 40 percent / conc. NH3 / methanol / 360 h / Ambient temperature 4: 90 percent / pyridine / Ambient temperature 5: 25 percent / BBr3 / CH2Cl2 / -75 - 20 °C 6: 20 percent / 0.2 N aq. NaOH / 64 h / Ambient temperature View Scheme

1: 1.) NaBH4 / 1.) 20 deg C, 2.) 80 deg C, 9 h 2: 40 percent / conc. NH3 / methanol / 360 h / Ambient temperature 3: 90 percent / pyridine / Ambient temperature 4: 25 percent / BBr3 / CH2Cl2 / -75 - 20 °C 5: 20 percent / 0.2 N aq. NaOH / 64 h / Ambient temperature View Scheme

1: 90 percent / pyridine / Ambient temperature 2: 25 percent / BBr3 / CH2Cl2 / -75 - 20 °C 3: 20 percent / 0.2 N aq. NaOH / 64 h / Ambient temperature View Scheme

1: 40 percent / conc. NH3 / methanol / 360 h / Ambient temperature 2: 90 percent / pyridine / Ambient temperature 3: 25 percent / BBr3 / CH2Cl2 / -75 - 20 °C 4: 20 percent / 0.2 N aq. NaOH / 64 h / Ambient temperature View Scheme

1: 25 percent / BBr3 / CH2Cl2 / -75 - 20 °C 2: 20 percent / 0.2 N aq. NaOH / 64 h / Ambient temperature View Scheme

sodium hydroxide 64 h; Ambient temperature;