1: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 2: 18 h / Heating 3: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: Ph2C=O / Irradiation 2: LiAlH4 3: p-TsOH 4: Na/NH3 5: 60percent aq. AcOH 6: pyridine 7: 1.) MeSCH2S(O)Me, 2.) BuLi, 3.) H2SO4 8: C5H5NHBr3, pyridine / CH2Cl2 9: LiCl, Li2CO3, HMPA 10: EtONa / benzene 11: p-TsN3, triethylamine / diethyl ether 12: Irradiation 13: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 14: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 15: 18 h / Heating 16: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: EtONa / benzene 2: p-TsN3, triethylamine / diethyl ether 3: Irradiation 4: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 5: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 6: 18 h / Heating 7: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: C5H5NHBr3, pyridine / CH2Cl2 2: LiCl, Li2CO3, HMPA 3: EtONa / benzene 4: p-TsN3, triethylamine / diethyl ether 5: Irradiation 6: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 7: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 8: 18 h / Heating 9: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: 86 percent / triethylamine / methanol / 24 h / Irradiation 2: pyridine, pyridinium bromide perbromide / CH2Cl2 / 3.5 h / 0 °C 3: LiCl, Li2CO3, HMPA / 42 h / 40 - 100 °C 4: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 5: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 6: 18 h / Heating 7: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: LiCl, Li2CO3, HMPA 2: EtONa / benzene 3: p-TsN3, triethylamine / diethyl ether 4: Irradiation 5: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 6: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 7: 18 h / Heating 8: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: Na/NH3 2: 60percent aq. AcOH 3: pyridine 4: 1.) MeSCH2S(O)Me, 2.) BuLi, 3.) H2SO4 5: C5H5NHBr3, pyridine / CH2Cl2 6: LiCl, Li2CO3, HMPA 7: EtONa / benzene 8: p-TsN3, triethylamine / diethyl ether 9: Irradiation 10: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 11: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 12: 18 h / Heating 13: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

1: LiAlH4 2: p-TsOH 3: Na/NH3 4: 60percent aq. AcOH 5: pyridine 6: 1.) MeSCH2S(O)Me, 2.) BuLi, 3.) H2SO4 7: C5H5NHBr3, pyridine / CH2Cl2 8: LiCl, Li2CO3, HMPA 9: EtONa / benzene 10: p-TsN3, triethylamine / diethyl ether 11: Irradiation 12: 100 percent / 5percent aq. NaOH / methanol / 6 h / 12 °C 13: triethylamine, (PhO)2P(O)N3 / benzene / 20 h / Heating 14: 18 h / Heating 15: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme

sodium hydroxide; sodium hydrogencarbonate; dimethyl sulfate 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h; Multistep reaction;

1: 18 h / Heating 2: 1.) NaHCO3, Me2SO4, 2.) NaOH / 1.) MeOH, 35 deg C, 40 h, 2.) MeOH, H2O, 40 deg C, 2 h View Scheme