1: ethanol / 7 h / Heating 2: polyphosphoric acid / Heating 3: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 4: 0.1 M NaOH / methanol / 0.25 h / Heating View Scheme

1: 1.) sodium hydride / 1.) DMF, 2.) DMF, RT, 2 h 2: BBr3, H2O / CH2Cl2 / 1.5 h / -70 - 20 °C 3: pyridine / toluene / 5 h / Heating 4: AlCl3, NaCl / 2 h / 160 °C 5: potassium carbonate / dimethylformamide / 5 h 6: various solvent(s) / 4 h / Heating 7: H2 / PtO2 / acetic acid / 2206.5 Torr 8: HCl / ethanol / Heating View Scheme

1: pyridine / toluene / 5 h / Heating 2: AlCl3, NaCl / 2 h / 160 °C 3: potassium carbonate / dimethylformamide / 5 h 4: various solvent(s) / 4 h / Heating 5: H2 / PtO2 / acetic acid / 2206.5 Torr 6: HCl / ethanol / Heating View Scheme

1: BBr3, H2O / CH2Cl2 / 1.5 h / -70 - 20 °C 2: pyridine / toluene / 5 h / Heating 3: AlCl3, NaCl / 2 h / 160 °C 4: potassium carbonate / dimethylformamide / 5 h 5: various solvent(s) / 4 h / Heating 6: H2 / PtO2 / acetic acid / 2206.5 Torr 7: HCl / ethanol / Heating View Scheme

1: AlCl3, NaCl / 2 h / 160 °C 2: potassium carbonate / dimethylformamide / 5 h 3: various solvent(s) / 4 h / Heating 4: H2 / PtO2 / acetic acid / 2206.5 Torr 5: HCl / ethanol / Heating View Scheme

1: potassium carbonate / dimethylformamide / 5 h 2: various solvent(s) / 4 h / Heating 3: H2 / PtO2 / acetic acid / 2206.5 Torr 4: HCl / ethanol / Heating View Scheme

1: various solvent(s) / 4 h / Heating 2: H2 / PtO2 / acetic acid / 2206.5 Torr 3: HCl / ethanol / Heating View Scheme

1: H2 / PtO2 / acetic acid / 2206.5 Torr 2: HCl / ethanol / Heating View Scheme

hydrogenchloride in ethanol Heating;