1: NaBH4 / methanol; H2O / 1 h / Ambient temperature 2: acetic anhydride / 6 h / Heating 3: 89.5 percent / lithium aluminum hydride / diisopropyl ether / 1.) 5 deg C, 1 h, 2.) RT, 2 h View Scheme

1: NaBH4 / methanol; H2O / 1 h / Ambient temperature 2: acetic anhydride / 6 h / Heating View Scheme