ammonia in methanol 0.75 h;

boron trifluoride diethyl etherate in 1,4-dioxane T=85°C; 4 h;

1: 85 percent / sulphuric acid / 12 h / Heating 2: 80 percent / potassium carbonate / dimethylformamide 3: 85 percent / KOH / H2O / 1 h / Heating 4: thionyl chloride / benzene / 2 h / Heating 5: hydrogen / Pd-BaSO4, sulphur-quinoline poison / xylene / Heating 6: 90 percent / HCl (gas) / benzene / overnight 7: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 8: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 9: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 10: 85 percent / pyridine / 6 h / Ambient temperature 11: 70 percent / PTSA / benzene / 0.5 h / Heating 12: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: 80 percent / potassium carbonate / dimethylformamide 2: 85 percent / KOH / H2O / 1 h / Heating 3: thionyl chloride / benzene / 2 h / Heating 4: hydrogen / Pd-BaSO4, sulphur-quinoline poison / xylene / Heating 5: 90 percent / HCl (gas) / benzene / overnight 6: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 7: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 8: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 9: 85 percent / pyridine / 6 h / Ambient temperature 10: 70 percent / PTSA / benzene / 0.5 h / Heating 11: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: 90 percent / HCl (gas) / benzene / overnight 2: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 3: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 4: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 5: 85 percent / pyridine / 6 h / Ambient temperature 6: 70 percent / PTSA / benzene / 0.5 h / Heating 7: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: thionyl chloride / benzene / 2 h / Heating 2: hydrogen / Pd-BaSO4, sulphur-quinoline poison / xylene / Heating 3: 90 percent / HCl (gas) / benzene / overnight 4: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 5: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 6: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 7: 85 percent / pyridine / 6 h / Ambient temperature 8: 70 percent / PTSA / benzene / 0.5 h / Heating 9: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: hydrogen / Pd-BaSO4, sulphur-quinoline poison / xylene / Heating 2: 90 percent / HCl (gas) / benzene / overnight 3: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 4: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 5: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 6: 85 percent / pyridine / 6 h / Ambient temperature 7: 70 percent / PTSA / benzene / 0.5 h / Heating 8: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 2: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 3: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 4: 85 percent / pyridine / 6 h / Ambient temperature 5: 70 percent / PTSA / benzene / 0.5 h / Heating 6: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 2: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 3: 85 percent / pyridine / 6 h / Ambient temperature 4: 70 percent / PTSA / benzene / 0.5 h / Heating 5: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme

1: 85 percent / KOH / H2O / 1 h / Heating 2: thionyl chloride / benzene / 2 h / Heating 3: hydrogen / Pd-BaSO4, sulphur-quinoline poison / xylene / Heating 4: 90 percent / HCl (gas) / benzene / overnight 5: 70 percent / hydrogen / Pd-C / tetrahydrofuran / Ambient temperature 6: 45 percent / diethyl ether; tetrahydrofuran / 0.33 h 7: 90 percent / hydrazine hydrate / Raney-Ni / methanol / 1 h / Heating 8: 85 percent / pyridine / 6 h / Ambient temperature 9: 70 percent / PTSA / benzene / 0.5 h / Heating 10: 95 percent / liquor ammonia / methanol / 0.75 h View Scheme