1: HCl gas / Heating 2: 70 percent / 18 h / Ambient temperature 3: 80 percent / MnO2 / methylamine / 18 h / Ambient temperature View Scheme

1: HCl gas / Heating 2: 90 percent / 18 h / Ambient temperature 3: 450 mg / MnO2 / benzene / 12 h / Heating View Scheme

1: HCl gas / Heating 2: 90 percent / 18 h / Ambient temperature 3: 50 percent / MnO2 / various solvent(s) / 72 h / Ambient temperature View Scheme

1: 57 percent / HCl / 6 h / Heating 2: 97 percent / S / xylene; dioxane / 144 h / Heating 3: 82 percent / LiBH4 / tetrahydrofuran / 9 h / Ambient temperature View Scheme

1: 57 percent / HCl / 6 h / Heating 2: 97 percent / S / xylene; dioxane / 144 h / Heating 3: 82 percent / LiBH4 / tetrahydrofuran / 9 h / Ambient temperature 4: 70 percent / MnO2 / acetonitrile / 4.5 h / Heating 5: 96 percent / tetrahydrofuran / 2.5 h / 25 °C 6: 80 percent / MnO2 / acetonitrile / 1.5 h / Heating View Scheme

1: HCl gas / Heating 2: sulfur / xylene / Heating 3: NH3 / methanol View Scheme

1: 50 percent / HCl (gas) 2: 30 percent / chloranil / various solvent(s) / 1.5 h / Heating View Scheme

1: 85 percent / H2SO4 / Heating 2: 80 percent / MnO2 / benzene / Heating 3: 90 percent / NaOH / H2O / Heating 4: dimethylformamide / 2 h / 20 °C 5: 70 percent / DBU / 18 h / 80 - 85 °C View Scheme

1.1: thionyl chloride / 24 h / -10 °C / Reflux 1.2: pH 8 2.1: trichloroisocyanuric acid; triethylamine / N,N-dimethyl-formamide / 2 h / -20 - 0 °C 3.1: hydrazine hydrate / pentan-1-ol / 7 h / 150 °C 4.1: hydrogenchloride; sodium nitrite / water / 1 h / 0 °C 5.1: o-xylene / 1 h / 160 °C 6.1: water; potassium hydroxide / ethanol / 2 h / Reflux 7.1: pyridine / 5 h / 20 °C 7.2: 1 h / 20 °C / Saturated solution 8.1: lithium aluminium tetrahydride / tetrahydrofuran / 2 h / Reflux 8.2: 2 h / 20 °C View Scheme