1: lithium tri-tert-butoxyaluminum hydride 2: 95.5 percent / diisopropylethylamine / CH2Cl2 / 4 h / Ambient temperature 3: 40 percent / 50percent NaH / dimethylsulfoxide / 1 h / Ambient temperature 4: H2 / 10percent Pd-C / ethanol / 26 h / 760 Torr 5: 97 percent / LiAlH4 / diethyl ether / 0.5 h / -30 °C 6: 1.) KH, 2.) n-BuLi / 1.) THF, 1.5 h, room temp., 2.) THF, hexane, -78 deg C, 2 h, -78 deg C -> room temp., 6 h 7: 100 percent / (i-Pr)2NEt / CH2Cl2 / 0.33 h / Ambient temperature 8: 1.) 1 M BH3*THF, 2.) 3 M NaOH, 40percent H2O2 / 1.) 2-methoxyethyl ether, room temp., 24 h, 2.) THF, water, 50 deg C, 1 h 9: 100 percent / pyridinium chlorochromate / CH2Cl2 / 2.5 h 10: 348 mg / NaOCH3 / methanol / 9.5 h / Heating 11: 36.8 percent / benzene / 9.5 h / Irradiation 12: 81.2 percent / tetra-n-butylammonium fluoride trihydrate / bis-(2-methoxy-ethyl) ether / 36 h / 55 °C / 2 Torr 13: 80.5 percent / pyridinium chlorochromate / CH2Cl2 / 1 h / Ambient temperature 14: 1.) tetra-n-butylammonium fluoride, 2.) Pd(OAc)2 / 1.) THF, 30 min, 2.) CH3CN, 33.5 h 15: 97 percent / CeCl3*7H2O, NaBH4 / methanol / 0.33 h / 0 °C 16: 62.4 percent / diethyl azodicarboxylate, Ph3P / benzene / 3 h / Ambient temperature 17: 61 percent / 35percent HClO4 / tetrahydrofuran; H2O / 25 h 18: 77 percent / 5percent potassium hydroxide / ethanol / 3 h / 50 °C View Scheme

1: 95.5 percent / diisopropylethylamine / CH2Cl2 / 4 h / Ambient temperature 2: 40 percent / 50percent NaH / dimethylsulfoxide / 1 h / Ambient temperature 3: H2 / 10percent Pd-C / ethanol / 26 h / 760 Torr 4: 97 percent / LiAlH4 / diethyl ether / 0.5 h / -30 °C 5: 1.) KH, 2.) n-BuLi / 1.) THF, 1.5 h, room temp., 2.) THF, hexane, -78 deg C, 2 h, -78 deg C -> room temp., 6 h 6: 100 percent / (i-Pr)2NEt / CH2Cl2 / 0.33 h / Ambient temperature 7: 1.) 1 M BH3*THF, 2.) 3 M NaOH, 40percent H2O2 / 1.) 2-methoxyethyl ether, room temp., 24 h, 2.) THF, water, 50 deg C, 1 h 8: 100 percent / pyridinium chlorochromate / CH2Cl2 / 2.5 h 9: 348 mg / NaOCH3 / methanol / 9.5 h / Heating 10: 36.8 percent / benzene / 9.5 h / Irradiation 11: 81.2 percent / tetra-n-butylammonium fluoride trihydrate / bis-(2-methoxy-ethyl) ether / 36 h / 55 °C / 2 Torr 12: 80.5 percent / pyridinium chlorochromate / CH2Cl2 / 1 h / Ambient temperature 13: 1.) tetra-n-butylammonium fluoride, 2.) Pd(OAc)2 / 1.) THF, 30 min, 2.) CH3CN, 33.5 h 14: 97 percent / CeCl3*7H2O, NaBH4 / methanol / 0.33 h / 0 °C 15: 62.4 percent / diethyl azodicarboxylate, Ph3P / benzene / 3 h / Ambient temperature 16: 61 percent / 35percent HClO4 / tetrahydrofuran; H2O / 25 h 17: 77 percent / 5percent potassium hydroxide / ethanol / 3 h / 50 °C View Scheme

1: (n-Bu)4NF / 55 °C / 2 Torr 2: PCC / CH2Cl2 3: (n-Bu)4NF / tetrahydrofuran 4: Pd(OAc)2 / acetonitrile 5: 1.) NaBH4, CeCl3, 2.) (=NCOOC2H5)2, Ph3P / 1.) CH3OH, 0 deg C, 2.) R.T. 6: HClO4 / tetrahydrofuran; H2O / Ambient temperature 7: KOH / ethanol / 3 h / 50 °C View Scheme

1: 1.) BH3.THF, 2.) H2O2, NaOH / 1.) diglyme, 2.) H2O 2: PCC / CH2Cl2 3: NaOCH3 / methanol 4: 49 percent / benzene / Ambient temperature; Irradiation 5: (n-Bu)4NF / 55 °C / 2 Torr 6: PCC / CH2Cl2 7: (n-Bu)4NF / tetrahydrofuran 8: Pd(OAc)2 / acetonitrile 9: 1.) NaBH4, CeCl3, 2.) (=NCOOC2H5)2, Ph3P / 1.) CH3OH, 0 deg C, 2.) R.T. 10: HClO4 / tetrahydrofuran; H2O / Ambient temperature 11: KOH / ethanol / 3 h / 50 °C View Scheme

1: 1.) NaBH4, CeCl3, 2.) (=NCOOC2H5)2, Ph3P / 1.) CH3OH, 0 deg C, 2.) R.T. 2: HClO4 / tetrahydrofuran; H2O / Ambient temperature 3: KOH / ethanol / 3 h / 50 °C View Scheme

1: HClO4 / tetrahydrofuran; H2O / Ambient temperature 2: KOH / ethanol / 3 h / 50 °C View Scheme

1: NaOCH3 / methanol 2: 49 percent / benzene / Ambient temperature; Irradiation 3: (n-Bu)4NF / 55 °C / 2 Torr 4: PCC / CH2Cl2 5: (n-Bu)4NF / tetrahydrofuran 6: Pd(OAc)2 / acetonitrile 7: 1.) NaBH4, CeCl3, 2.) (=NCOOC2H5)2, Ph3P / 1.) CH3OH, 0 deg C, 2.) R.T. 8: HClO4 / tetrahydrofuran; H2O / Ambient temperature 9: KOH / ethanol / 3 h / 50 °C View Scheme

1: 62.4 percent / diethyl azodicarboxylate, Ph3P / benzene / 3 h / Ambient temperature 2: 61 percent / 35percent HClO4 / tetrahydrofuran; H2O / 25 h 3: 77 percent / 5percent potassium hydroxide / ethanol / 3 h / 50 °C View Scheme