1: camphorsulfonic acid monohydrate / tetrahydrofuran 2: NaBH4 / methanol 3: Pb(OAc)4 / benzene 4: NaBH4 / methanol 5: sodium bis(2-methoxyethoxy)aluminum hydride / tetrahydrofuran / Heating 6: (PhO)2P(O)N3; Ph3P; diethyl azodicarboxylate / tetrahydrofuran 7: 100 percent / H2 / 10 percent Pd/C / ethanol 8: methanol / 110 °C 9: NaBH(OAc)3 / methanol 10: 98 percent / Na; NH3 / tetrahydrofuran 11: 60 percent / AcOH / Heating View Scheme