1.1: HCl gas / ethyl acetate / 2.5 h / -5 - 0 °C 1.2: H2O / ethyl acetate / 36 h / 20 - 25 °C 2.1: 80 percent / H2SO4; EtOH; H2O / H2O / 4 h / 66 - 70 °C 3.1: 83 percent / Red-Al / toluene / 1.5 h / 60 - 62 °C 4.1: 82 percent / toluene / 80 - 90 °C 5.1: 80 percent / AlCl3 / 3 h / 170 °C 6.1: 90 percent / aq. NaOH / ethanol; H2O / Heating View Scheme

1: 83 percent / Red-Al / toluene / 1.5 h / 60 - 62 °C 2: 82 percent / toluene / 80 - 90 °C 3: 80 percent / AlCl3 / 3 h / 170 °C 4: 90 percent / aq. NaOH / ethanol; H2O / Heating View Scheme

1: 76 percent / I2; DBU / xylene / 36 h / 155 °C 2: 90 percent / aq. NaOH / ethanol; H2O / Heating View Scheme

1: 80 percent / AlCl3 / 3 h / 170 °C 2: 90 percent / aq. NaOH / ethanol; H2O / Heating View Scheme

1: 1,8-diazabicyclo[5.4.0]undec-7-ene; copper (II) acetate monohydrate / 1,4-dioxane / 25 °C 2: dimethylsulfide borane complex / tetrahydrofuran / 0 °C / |Inert atmosphere; |Reflux 3: pyridine; thionyl chloride / tetrahydrofuran / 0 - 5 °C 4: dimethyl sulfoxide / 1.5 h / |Inert atmosphere 5: water; Ba(OH)2 / 1,4-dioxane / 30 h / |Reflux; |Inert atmosphere View Scheme

1: dimethylsulfide borane complex / tetrahydrofuran / 0 °C / |Inert atmosphere; |Reflux 2: pyridine; thionyl chloride / tetrahydrofuran / 0 - 5 °C 3: dimethyl sulfoxide / 1.5 h / |Inert atmosphere 4: water; Ba(OH)2 / 1,4-dioxane / 30 h / |Reflux; |Inert atmosphere View Scheme

water; Ba(OH)2 in 1,4-dioxane 30 h; RefluxInert atmosphere;