sodium tetrahydroborate in dichloromethane; water; isopropyl alcohol T=20 - 25°C; 16 h;

Multi-step reaction with 6 steps 1: sulfuric acid / acetic acid / 1 h / 100 °C2: sodium hypochlorite; sodium hydroxide / methanol / 24 h / 25 °C3: hydrogen / methanol / 20 h / 80 °C / 22502.3 Torr4: water; potassium hydroxide / methanol / 24 h / Reflux5: ethanol; water / 1 h / 20 °C6: acetic acid / 2 - 4 h / 100 °C  

Multi-step reaction with 5 steps 1: sodium hypochlorite; sodium hydroxide / methanol / 24 h / 25 °C2: hydrogen / methanol / 20 h / 80 °C / 22502.3 Torr3: water; potassium hydroxide / methanol / 24 h / Reflux4: ethanol; water / 1 h / 20 °C5: acetic acid / 2 - 4 h / 100 °C  

Multi-step reaction with 7 steps 1: sodium hydroxide / water / 1 h / 0 - 5 °C2: phosphorus pentachloride / dichloromethane / 1 h / 0 - 5 °C3: AlCl3, aluminium chloride / dichloromethane / 4 h / 3 - 8 °C4: Pearlman's catalist; sulfuric acid; hydrogen; trifluoroacetic acid / 24 h / 20 °C / 5171.62 Torr5: water; potassium hydroxide / methanol / 24 h / Reflux6: ethanol; water / 1 h / 20 °C7: acetic acid / 2 - 4 h / 100 °C