1: 98 percent / lithium aluminum hydride / diethyl ether / 1 h / 20 °C 2: 93 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; 1-hydroxybenzotriazole hydrate / dimethylformamide / 1 h / 20 °C 3: Dess-Martin periodinane / CH2Cl2 / 4 h / 20 °C 4: 13 mg / NH3 / methanol / 24 h / 20 °C 5: 80 percent / trifluoroacetic acid / H2O View Scheme

1: 98 percent / lithium aluminum hydride / diethyl ether / 1 h / 20 °C 2: 93 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; 1-hydroxybenzotriazole hydrate / dimethylformamide / 1 h / 20 °C 3: Dess-Martin periodinane / CH2Cl2 / 4 h / 20 °C 4: 13 mg / NH3 / methanol / 24 h / 20 °C View Scheme

1: 98 percent / lithium aluminum hydride / diethyl ether / 1 h / 20 °C 2: 93 percent / 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride; 1-hydroxybenzotriazole hydrate / dimethylformamide / 1 h / 20 °C View Scheme