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 9: ethanol / 7 h / Heating 10: polyphosphoric acid / Heating 11: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 12: 0.1 M NaOH / methanol / 0.25 h / 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 7: ethanol / 7 h / Heating 8: polyphosphoric acid / Heating 9: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 10: 0.1 M NaOH / methanol / 0.25 h / 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 8: ethanol / 7 h / Heating 9: polyphosphoric acid / Heating 10: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 11: 0.1 M NaOH / methanol / 0.25 h / 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 6: ethanol / 7 h / Heating 7: polyphosphoric acid / Heating 8: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 9: 0.1 M NaOH / methanol / 0.25 h / 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 5: ethanol / 7 h / Heating 6: polyphosphoric acid / Heating 7: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 8: 0.1 M NaOH / methanol / 0.25 h / Heating View Scheme

1: various solvent(s) / 4 h / Heating 2: H2 / PtO2 / acetic acid / 2206.5 Torr 3: HCl / ethanol / Heating 4: ethanol / 7 h / Heating 5: polyphosphoric acid / Heating 6: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 7: 0.1 M NaOH / methanol / 0.25 h / Heating View Scheme

1: H2 / PtO2 / acetic acid / 2206.5 Torr 2: HCl / ethanol / Heating 3: ethanol / 7 h / Heating 4: polyphosphoric acid / Heating 5: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 6: 0.1 M NaOH / methanol / 0.25 h / Heating View Scheme

sodium hydroxide in methanol 0.25 h; Heating;

1: 1.) sodium hydride, 2.) HCl / 1.) DMF, RT, 24 h, 2.) reflux, 1 h 2: 0.1 M NaOH / methanol / 0.25 h / Heating View Scheme

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