1: 2.2 g / pyridine / 1 h / Heating 2: 1.8 g / KOH, pyridine / pyridine / 3 h 3: 1.5 g / fused sodium acetate, glacial acetic acid / 4 h / Heating 4: H2 / 10percent Pd/C 5: 0.15 g / AlCl3 / acetonitrile / 2 h / Heating View Scheme

1: 2.2 g / pyridine / 1 h / Heating 2: 1.8 g / KOH, pyridine / pyridine / 3 h 3: 1.5 g / fused sodium acetate, glacial acetic acid / 4 h / Heating 4: H2 / 10percent Pd/C 5: 0.15 g / AlCl3 / acetonitrile / 2 h / Heating View Scheme

1: H2 / 10percent Pd/C 2: 0.15 g / AlCl3 / acetonitrile / 2 h / Heating View Scheme

1: 1.5 g / fused sodium acetate, glacial acetic acid / 4 h / Heating 2: H2 / 10percent Pd/C 3: 0.15 g / AlCl3 / acetonitrile / 2 h / Heating View Scheme

1: 1.8 g / KOH, pyridine / pyridine / 3 h 2: 1.5 g / fused sodium acetate, glacial acetic acid / 4 h / Heating 3: H2 / 10percent Pd/C 4: 0.15 g / AlCl3 / acetonitrile / 2 h / Heating View Scheme

aluminium trichloride in acetonitrile 2 h; Heating;