diborane in tetrahydrofuran 18 h; Heating;

1: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 2: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 6 h 2: 53 percent / 4 N HCl / dioxane; diethyl ether / 0.83 h 3: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 4: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: 69 percent / dicyclohexylcarbodimide (DCC) / CH2Cl2 / 12 h / 0 °C 2: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 6 h 3: 53 percent / 4 N HCl / dioxane; diethyl ether / 0.83 h 4: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 5: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: 68 percent / dicyclohexylcarbodiimide (DCC) / CH2Cl2 / 12 h / 0 °C 2: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 3: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: 53 percent / 4 N HCl / dioxane; diethyl ether / 0.83 h 2: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 3: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 2: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: 89 percent / aq. NaOH / 2-methyl-propan-2-ol / 12 h 2: 69 percent / dicyclohexylcarbodimide (DCC) / CH2Cl2 / 12 h / 0 °C 3: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 6 h 4: 53 percent / 4 N HCl / dioxane; diethyl ether / 0.83 h 5: 66 percent / diisopropylethylamine (DIEA) / CH2Cl2 / 16 h 6: 69 percent / diborane / tetrahydrofuran / 18 h / Heating View Scheme

1: K3<Fe(CN)6>, aq. HCl 2: (i), (ii) NaBH4 View Scheme

(i), (ii) NaBH4; Multistep reaction;