1: NaBH4 / methanol 2: sodium bis(2-methoxyethoxy)aluminum hydride / tetrahydrofuran / Heating 3: (PhO)2P(O)N3; Ph3P; diethyl azodicarboxylate / tetrahydrofuran 4: 100 percent / H2 / 10 percent Pd/C / ethanol 5: methanol / 110 °C 6: NaBH(OAc)3 / methanol 7: 98 percent / Na; NH3 / tetrahydrofuran 8: 60 percent / AcOH / Heating View Scheme