hydrogen; palladium on activated charcoal in methanol; ethyl acetate

1: pyridine / 2 h / 120 °C 2: KOH, pyridine / 4 h / 60 °C 3: 98 percent / sodium acetate / acetic acid / 4 h / 140 °C 4: 97 percent / H2 / 10percent Pd/C / ethyl acetate; methanol View Scheme

1: K2CO3 / dimethylformamide / 3 h / Heating 2: conc.HCl / acetic acid / 1.42 h / Ambient temperature 3: pyridine / 2 h / 120 °C 4: KOH, pyridine / 4 h / 60 °C 5: 98 percent / sodium acetate / acetic acid / 4 h / 140 °C 6: 97 percent / H2 / 10percent Pd/C / ethyl acetate; methanol View Scheme

1: pyridine / 2 h / 120 °C 2: KOH, pyridine / 4 h / 60 °C 3: 98 percent / sodium acetate / acetic acid / 4 h / 140 °C 4: 97 percent / H2 / 10percent Pd/C / ethyl acetate; methanol View Scheme

1: conc.HCl / acetic acid / 1.42 h / Ambient temperature 2: pyridine / 2 h / 120 °C 3: KOH, pyridine / 4 h / 60 °C 4: 98 percent / sodium acetate / acetic acid / 4 h / 140 °C 5: 97 percent / H2 / 10percent Pd/C / ethyl acetate; methanol View Scheme

1: 98 percent / sodium acetate / acetic acid / 4 h / 140 °C 2: 97 percent / H2 / 10percent Pd/C / ethyl acetate; methanol View Scheme

1: KOH, pyridine / 4 h / 60 °C 2: 98 percent / sodium acetate / acetic acid / 4 h / 140 °C 3: 97 percent / H2 / 10percent Pd/C / ethyl acetate; methanol View Scheme

aluminium trichloride in acetonitrile T=70°C; 10 h;